Uplift that quarantine!
You need to write to support, and explain that your game was quarantined in the voting period of a jam. Return here with the ticket number, if nothing happens.
Itch will not tell you, why your game was quarantined, but since you logged into your account from three different countries, the system might have flagged this as suspicous and as a potentially hacked account and quarantined fresh uploads.
Our system has flagged this page for additional review due to potential suspicious behavior from the page owner.
That's the quarantine message. Normally that would not be an issue, but annoying. But your game is in a jam and there is a voting happening. So write to support.