If you are receiving this error message, you may do the following to be able to remedy or fix the issue.
- Exit your Brave Frontier App completely. Make sure that the game is not running in the background, you might want to check you device's multi-tasking feature for this one.
- Clear your mobile browser's history and/or re-log your Facebook account (application) from your device. This means you need to log-off your account then log it in again.
- Launch Brave Frontier then perform a Clear User Data procedure. If you want to know how to properly do the said procedure please refer to this article.