You need to access the old panel account.
Once in the accounts list you should see gatorei.com.br. enter cPanel then browse all the way down and click DELETE ACCOUNT/SITE.
If you see "account cancelled due to xyz" then hit your name under customer details and then DELETE PROFILE.
Your old panel account will be removed completely, log back in using the same email/password and the new panel appears.
gatorei.com.br will no longer show the migration page.