If you do not recieve your confirmation email within a few hours, please email haloutau@gmail.com with your username for manual validation. Your account should be activated within 24 hours.
You may also reach out via any other listed contact on Admin Halo's about page: https://utaforum.net/members/halo.194/#about
In Openutau, in the "DEFAULT" section where the languages are, the only option that is in Polish is CVC, and I don't know if there is a reclist with that format.