Yeah, when I read who was buying PIA back then and did a little research I just said "nope."

I don't know enough about Proton or NAT-PMP router support to comment. Hopefully someone else can. What I can say is that, based on my knowledge, PF does not directly influence your ability to download, but like I said, it indirectly can influence your ability to download if the original uploader/seeder is gone and no one else in the swarm has PF or they limit their uploads (like you do, which is understandable). I don't have PF with Mullvad & I still obtain new or recent releases without a problem. What's "recent" really isn't definable, it more depends on the file popularity and how many seeders are still supporting the file that I can connect to.

Example: within a month or so after Mullvad dropped PF I was trying to DL a very popular show (over 8.0 on IMDB & over 80% on TMDB) that had been out less than a year. I tried all variations of 1080p, 720p, x264 & x265. I couldn't complete the entire season from any one source. I was using a few different websites to find access to the files, in addition to using the built-in qBit search function (plugins, including having the Jacket plugin setup), and automatically adding trackers to each torrent that I had copied from "ngosang" and "newtrackon" into the qBit "BitTorrent" section of "options." I never ran into this big of a problem before on something that was still fairly new. I knew I had to choose AirVPN, ProtonVPN, switch to private trackers, or try Usenet. I wasn't interested in private trackers (just seemed like work, to get in with good private tracker/s, having to maintain a good upload ratio, even when others may not want the files I have, and I'm an adult now, with some disposable income, so I'd rather just pay a little, get what I want, and not worry about playing nice with others, although I recognize the importance of it and always supported it in the past). Within an hour of getting Usenet, I had all my files, in the format I wanted.

With Usenet a VPN is not needed, because SABnzbd (kind of like qBit, it DLs the files) has an SSL connection enabled (Secure Sockets Layer, encryption-based internet security protocol). Then you need an indexer (kind of like a phone book or a geo-locator, sort of telling you where the files are located, but the indexer does not provide access to the files themselves) and a provider (a service that actually provides access to that file). You can even automate everything by installing the "arrs" (Prowlarr, Radarr, Sonarr, Lidarr, etc. Do a search for "servarr" and you'll see everything available there.) Link: https://wiki.servarr.com/

There are many indexers, some better than others. Having just one isn't good enough (because their coverage is all a little different than others in regards to what they track). Some you can have limited access to for free. I have access to DrunkenSlug (DS), NZBGeek (Geek), NZBFinder (Finder), NZBPlanet (Planet), NZB.Su (Su), and NinjaCentral (Ninja). Some of these I pay for, around $5 - $10 per year, and others I just use for free. If I had a more limited budget, I'd probably just pay for DS & Geek, or use them & others for free if you don't search and DL much.

There are also many providers, on the same or different "backbones," & some are much better than others. If you want some older files, along with new releases, you need someone with a longer "retention" policy. I went with Eweka, a very popular provider. They have been fantastic for me. An annual unlimited download account cost me $54.35 (with a foreign transaction fee), or $4.53/month. If you only need new releases, then a provider with a limited retention would be fine. I also see many people use a combination deal with Frugal Usenet (unlimited annual access, but limited retention) and it also has a 300 GB "block" with UsenetFarm (higher or longer retention period), from a company called "Blocknews" for $40/Year. Blocks are specific sizes of data access (300GB, 500GB, 1TB, 2TB, etc.) that can be purchased, and generally do not expire. The idea is, most of your recent files come from Frugal, and any older files not retained there should be available on UsenetFarm. I would not buy blocks from other backbones unless you absolutely can not obtain a file from your current provider, and then you want to make sure the block is coming from a different backbone. In total, the annual cost of utilizing Usenet is comparable to many VPNs. However, I continue to use Mullvad (so far) simply for the privacy it provides me, and with a voucher I bought off Amazon, the price is discounted. I got a 6-month voucher for $23.80 almost a year ago on a lightening deal, or $3.97/mo.

PF influences reverse connections to you when downloading as well. People can connect to you and upload to you. If the torrent is really badly seeded you might not be able to download it.

I'm assuming you didn't read my post later in this part of the thread (responding just below here to "Giu176" - it's lengthy, sorry, but start almost half way down into that post and read the rest for more detailed info and recommendations, beginning with the paragraph that starts: "With Usenet a VPN is not needed, because SABnzbd ......" That info should provide a good guide on how to get started. Anymore than that and it can get overwhelming for some. I'm an analyst for work, so looking at all the available data, including many threads, and trying to make a decision was kind of daunting when I first started looking at it all.

Otherwise, the Reddit wiki is unfortunately the only other source I'm aware of. Start here: https://www.reddit.com/r/usenet/wiki/index

If you're new (like I was) I'd stick to basics, like I outlined in the post I mentioned. But here is the part for choosing an indexer: https://www.reddit.com/r/usenet/wiki/indexers

It's my understanding (and it makes sense) that the "Free Membership Sites" are basically worthless. Pay most attention to the "Yearly Membership" section to get started, and look for "Open" in the "Registrations" column. The indexers I referenced (in the other post) are the main ones more experienced users mentioned. However, I believe some of it is marketing by owners/affiliates. Example: some say how great DOGnzb and NinjaCentral are, but I'm convinced it just self promotion. DOG is extremely expensive (see the pricing there, but you have to "buy" a shirt for a subscription, and if you actually want the shirt you "paid" for, you have to pay extra, so I deleted my account after getting an invite and registering). Ninja isn't bad, they do have some rare things, but it's very uncommon for me to find something on Ninja that isn't already tracked by one of my other indexers. The problem is, you have to get an invite, and it can be rare that it opens for registrations or an invite is available (I think by design, you want the thing you can't have). Not really worth it though.

The sub for getting invites to other indexers that aren't "open": https://www.reddit.com/r/UsenetInvites/

Don't just make a post asking for an invite, unless you've already made a post offering an invite to somewhere else. I enabled notifications on this sub so that I knew when an indexer I wanted became available. Read here to understand better how it works: https://www.reddit.com/r/UsenetInvites/wiki/startingout

That's how I got DrunkenSlug (DS) and NzbPlanet (Planet), but Planet isn't that good, imo. You should be able to use it for free though, on a limited basis.

Next, providers: https://www.reddit.com/r/usenet/wiki/providers

See the two recommendations I already made (I'd REALLY suggest just sticking with one of those), otherwise, understanding the differences can get rather confusing, but I'll provide a brief explanation here. If you have trouble obtaining a file you're indexer is saying is out there, but you have trouble getting it from the provider you have (I don't have problems with Eweka, but just so I don't look like a shill....), having access to another provider, specifically on a different backbone, can be helpful. Here is a link to the provider "Usenet Tree": https://commons.wikimedia.org/wiki/File:Usenet_Providers_and_Backbones.svg -or- I THINK this is a direct link to a more up to date version, if I recall correctly: https://svgshare.com/i/iG8.svg -and- there is also this website, which kind of helps stopping you from getting overlapping providers (but again, see my two recommendations, and you can use this later if you ever have a problem, but you shouldn't): https://whatsmyuse.net/

Lastly, even though I don't use all of this on a server, I installed all the "arrs" on my PC and enjoy having access through them (again, see my other post for an explanation and links to the "arrs". I don't like having the arrs reorder my files, and create their own subfolders, so I just use them to reference files I'm kind of following, if you will. So I disable the "download when available" option.

With this post, and the other, it's already getting kind of lengthy and convoluted. However, if there are any other questions, I'll do my best to answer.

Actually, one more item, when you get more familiar with Usenet and the arrs, you can reference this site for setting up "arrs" profiles if you want: https://trash-guides.info/