Hello, this is from Archbears.

First and foremost, we would like to deeply apologize to all of our users for the issue that still remains unresolved despite having the temporary maintenance yesterday.

This issue that fails players from logging in Black Survival occurred due to the non-latest version of Google PlayGame and Google PlayStore.

Hence, the log-in issues can be solved after updating the Google PlayGame app and Google PlayStore app, and we highly suggest to confirm the version and proceed with the update.

The following are the list of the latest version of the apps on March 13th:

Google PlayGame app latest version : 2019.02.8706

: 2019.02.8706 Google PlayStore app latest version : 13.9.17-all

For users who are unable to see the latest version of the apps, we suggest deleting the temporary cache(file) of the Google PlayStore app, and restart again.

Once again, we deeply apologize for the inconvenience caused.