Issue logging into Google Play Game Services

Hello, I previously posted about an issue I had with logging into Google Play Game Services after uploading a beta version of my game to google play (Issue with signing into google play game services - Blueprint - Unreal Engine Forums), however I was able to resolve the issue. Now after promoting the game to “production,” the app is no longer logging into the google game services. I have been trying to figure out what is going wrong for some time now with no luck. Any help would be greatly appreciated.

P.S. The game is able to log into google just fine when it is installed from the packaged install file on my computer, it is only not logging in when downloaded from the google play store.

Would it be the most practical to just unpublish the game entirely and republish it without opting into the google app signing?

I had similar problem . I already had fully working version on Google Play without any problems. Suddenly log in is not working anymore. What is funny that I connect another app slightly different ver. and it logs in fine with the same leader board info. The only thing I can think of is that I logged in to many times with different accounts so I’m thinking Google Play has ban my app. What do you guys think.

Since Google + shut down .Things now are even worst. I get google play API errors and hardly any installs. I don’t know who’s running these company but for sure get some one who knows how or maybe some one who will at least try,

I found the issue for my app at least. I had to use the SHA-1 key provided by google (and specifically just that key) inside the API console that is accessed through the Game Services tab on the developer console. I believe this is only If you opted for “app signing” from google. I basically just copied the SHA-1 key from the certificates tab and pasted it inside the API Console.