So, I deleted my last user card background about a month ago, and now it’s blank. When I deleted it, I tried to upload a new picture, but it said I couldn’t upload it. I tried to upload other ones, and I got the same result. I tried again today, and it still didn’t work. I can upload photos to posts just fine.
Thanks, it worked. It could really have been its size, but I’m on a phone now, and I uploaded a picture I took with the phone, so it could’ve been a glitch.