Check your spam/promotions folder to see if you already got an email with login details.
If you haven't yet received an email, be on the lookout for one from email@example.com. We created a workaround for an issue affecting mainly Yahoo! email domains that hadn't yet received the link.
Please only log in to the new portal for the first time using the email from OMMA to be sure your licensing data transfers correctly. Creating a new account and asking to merge it with the old account will create processing delays.