Makes me remember this.
I spent an insane effort of uploading one (1) document to the french government once. First you are allowed only one document but they needed 5 different, so I spent some time figuring out how to combine 5 pdfs into one, not a biggie but well, how convenient eh.
Then I spent 4 days trying to upload the 800kb document which I figured was under the 10MB limit. FF, chrome, mobile, PC, you name it. It just "didn't upload".
Then it just hit me on the fourth day, probably because I started to slowly go insane, that soneone who programmed this stuff thought that the "number of MB must be 1 to 10", not more, not less...
I was quite desperate, but who knows right? I added two grayish pages to my document to get over that 1MB and LO AND BEHOLD, it worked...
Thank you for coming to my rant 😊