I'm trying to add myself to a "internal testers" testflight build. When I tap the "start testing" link in the email, Testflight (the app) opens on the app page. Tapping "install" returns an alert box telling "Couln't accept the invite", "Invite for this app already accepted" (the second translated back from Italian, it's translated in the app).
The app don't appears in "Testing", there is no (apparent) way to start the test. The same appens on other devices of mine. I already tried to remove me from the internal testers list and readd me later with no results.
Any ideas/hints/suggestions?
Thank you!