I cannot submit my projects to any jam. I get an error message "We seem to be having server problems right now! Please try again later."

I tried to submit different projects from different devices and browsers, WiFi and lan connection, log off and log on and in a 5 days time span. Nothing works. I always get the same error message. What is going on?

Did you previously submit a game to many jams? It's possible that you were banned. Please contact support and ask, they can tell you more exactly and help lift it.