You'll probably get better help if you post your config and any logs. Caddy may not log an entry to a file but you can watch the console logs to see everything (podman logs caddy or similar.)

This just boils down to basic opsec. Be careful what you post/comment, continue to use a generic username, stuff like that.

I run this same setup. Do you have any issues with inviting others to calendar events? If i invite via fossify on my phone it never gets sent, but if i do it from the Nextcloud UI it goes through without issue.

My most recent one I got working was Gluetun. And yeah in order to use it I have my entire arr stack in the same gluetun pod. The http proxy also works but I only wanted that as a last resort.

I always appreciate people putting up quadlet content. I've switched over almost my entire lab to it aside from Nextcloud (so thanks!) and a couple containers that have weird network quirks