If you face server error 1000 when trying to enter the game, please do the following:

- On Android: Open Play Store ---> Click on your avatar in the upper right corner  --->  Select "Manage apps & device"  ---> Select "Update". Find C.A.T.S. in the list and click "Update".

- On iOS: Open App Store ---> Click on your avatar in the upper right corner  ---> Select "Applications", find C.A.T.S. on the list. Then update the game manually by clicking "Update".

After updating the game manually, you should be able to enter it without issues. 

We apologize for the trouble!