This issue is cropping up because you may have more than one Facebook account connected on your device. It's very easy to solve this problem, however it needs you to take a few steps.

1. Please open Lexulous, tap on Settings (top right), scroll down and tap on X to logout of Facebook.

2. Then open Safari, visit and Logout.

3. Finally, open Lexulous app, tap on Facebook option to reconnect with the correct account.

These steps will get your account & games back.