TestFlight Invitation Not Working

I removed TestFlight app from old device (email is no where exists in AppStore connect in Testers) which has different email than my AppStoreConnect email. Now I am trying to get invitation to the device which has same email as my AppStoreConnect, but keep getting ->

Couldn't Load App

The apple Account you're currently signed in with, <appstore connect email>, doesn't match the one assiciated to this invitation. You can sign in to TestFlight with original Apple Account, <other-email>, or request a ne….

Where as all other apps in the AppStore connect shows up fine in the TestFlight using appstore connect email. Followed all the reset & settings mentioned but no luck so far.

TestFlight Invitation Not Working
 
 
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