I am afraid, there will not be a straightforward solution. Itch will not change their policy for you. If they quarantine a page, they will display that warning on all links and downloads on that page. And that warning includes all the countries the account has been connected from.
My guess is, that they display the location to let people decide with more information, if they will trust the page. If the developer is known for being an Australian developer and the account was connected from Canada, that looks kinda strange. Some of those quarantined pages are indeed fake accounts trying to impersonate someone known.
Removing your pages from quarantine is not a permanent solution. It can happen at a later time again. They cannot protect an account from future quarantine, else the system would be trivial to overcome by using a hacked account, that already has that protection.
While you might contact Itch to get your games out of quarantine, after you notice the quarantine, that's actually redundant. They already have the game on a to-do list, because it is quarantined. Unfortunately, waiting time for staff to handle these cases can be rather long and they typically will not tell, why the game is quarantined.
So. What could you do?
Have a webgame and no external links on the page. And no download section. After a quick glance, your games look like the type of games that could easily be played in browser. While browser games can get quarantined, at least if they have links or download files, I am not sure, how you could trigger to display the quarantine message without those.