Oooh! You have a problem with ratings! I'm also having a similar problem recently, but only related to simple ratings on game pages, not ratings in game jams. Here are the results of my clueless guesswork about the problem:
https://itch.io/t/2190488/ratings-dont-register-on-game-pages
https://itch.io/t/2194081/is-silently-restricting-users-a-common-practice-here
If your problem is related to mine, then maybe it's really a bug, or you may got a silent account restriction for doing whatever you may never find out. Try to contact support by email. lol