If you experience any of the three issues that are in the title above, here are some steps that will help you mitigate them.
When playing Battle Bears: Fortress, it is best to:
-Play on a secure WiFi connection
-Have Bluetooth turned off
-Have any other unused applications closed in the background
-Updated to the latest OS
If you do experience Lagging, Crashing or Disconnections, there are many things that could have caused it.
-Your device is old or out-dated
-Your connection is not secure
-Your device is jailbroken or not up-to-date
-Your device ran out of memory
***Re-installing the game is the most common troubleshooting method that fixes issues, please make sure you have a registered account before doing so or your data may be wiped!***