The picture I tested it with was 49kb. I just tested it again to make sure, it still doesn't work.

I know it plays a role though, and it kinda sucks too, Lemmy told me specifically to sign up for this instance because when I was making this account, the other instances were becoming overbooked with people trying to sign up and it was causing too much server stress. And it's not like I can just transfer everything to a new account.