Could this be related to an old/trial/inactive Team plan that you may have had? Or is there a current plan that you're using?
Can you please contact Adobe Support? The team will be able to look into your account and try and figure out what's going on.
Do look for other/older emails that you may have received about this plan. It'll make it easier for the Support team to locate your Teams account. Because, if as per the emails, the plan has been deactivated and you don't have Admin rights, they may not find an associated plan to troubleshoot. Also, keep handy some recent payment details to help the Support team locate the account.
Sorry about the inconvenience. Hope this get sorted out soon. Let us know.