Yes, don't worry.
I see all those posts from people having problems too. I assume the itch.io support team is doing their best to help everyone affected, even if it's taking time. The problem is that it's taking too long.
Viewing post in More problems with quarantine
Hence my suggestion to just ignore it. This is not like a situation where police screamed at you: freeze! Officially you do not know that your game is on quarantine. Itch did not inform you about this and suggested things like logging out and in again with 2fa or whatever could be done to prove being not a hacked account.
If they want to be fair, they should not punish you for ignoring a thing you would only know by accident. (The punishment would be pushing the game at last place of queue)
Now that I mentioned it, logging out and doing a fresh 2fa log in might actually be a good thing, should that behaviour metric look at such things.