"Hi Dev team, I'd like to report a login issue with the Dokkan Battle mod. The 'Transfer Game Data via Google' option fails and shows a 'Canceled game data transfer via Google' error.
Here are the details: I successfully logged in once 4-5 days ago (most likely due to a cached Google session on my device). However, after I logged out, the token expired, and now Google Play Services completely blocks the login attempt due to the modified APK signature.
Now that the official game has removed the web-based login options (Facebook and Bandai ID) from the transfer screen, we are forced to rely on Google Play login, which doesn't work with modded apps. Are you guys currently looking into any bypass for this Google API check? Or is copying the Data folder via a rooted emulator the only viable workaround right now?"