iva4n i dont see any problem with you singin up with email, because (correct me if im wrong) its not correlated the account in OWLgame with the account in OWLdao.
So if im correct you can create a metamask wallet send your funds to that wallet and go to the OWLDAO connect the metamask one and its made.
That's what I did when I stake my account you need to approve Owldao first to access your Owl token and set the amount you want to stake the transaction fee for this is 0.0013048 BNB ($0.40) you still have 10 ten days to earn BUSD
https://owldao.io/pool before it expires, looking forward to the next staking pool, I'm lucky to be part of the campaign I'm earning Owl token and using it to stake.