This worked for me:
Go to your Android settings -> App -> Search for "Google Play Games".
On the top right (three dots on my Screen) -> Deinstall all updates.
Open Play Store -> Search for Google Play Games and Update this app.
-> Start Star Wars Galaxy of Heroes and have fun again.
Replies
Go to https://myaccount.google.com/security#connectedapps and delete Star Wars Capital and then try again
Yeah it worked for me ! Thanks a lot for this tip. Changing Google account password did not worked, but this works !
Simon
Go to your Android settings -> App -> Search for "Google Play Games".
On the top right (three dots on my Screen) -> Deinstall all updates.
Open Play Store -> Search for Google Play Games and Update this app.
-> Start Star Wars Galaxy of Heroes and have fun again.