Testers not getting invites or notifications after TestFlight update

I came across the TestFlight update in Itunes Connect today after uploading a new build to my app

Even though the app was shown under TestFlight menu, with Itunes Connect users listed, none of those users were notified of the new build

Of the 6 iTunes Connect testers, 4 had a status of Invited Resend Invite, 2 had status of Installed, but with no version/build number shown

Ive tried removing/adding iTunes Connect testers withut any change

Also if I click Resend Invite for one of the users, an invitation email is sent with "View in Testflight" link, which opens Testflight app & popup showing the correct version/build for the app with install button, when I tap the install button I see alert "Unable to Accept Invite" "Youve already accepted the invite for this app".

Any suggestions on how to get the latest TestFlight working would be most appreciated

Testers not getting invites or notifications after TestFlight update
 
 
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