Testflight AppleID/email update?

I recently changed my AppleID email (I no longer have access to the old email) but Testflight still lists my old email in the admin and on the app and I'm no longer able to receive new app testing invite emails (they go into the abyss of the old email I assume?)

Any ideas how I can force update the AppleID email associated with Testflight or whether it syncs after a certain period of time?

Testflight AppleID/email update?
 
 
Q