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. On your device please open the Facebook app and ensure you are logged on with the correct account.

2. Now go into the Settings app on the device.
- Tap on Safari
- Advanced
- Website Data
- In the search box type - facebook
- Tap on Search
- Tap Edit at bottom right corner
- Delete all entries that have Facebook here (generally 1 or 2)

3. Then open the Lexulous app and tap on Settings (top right) icon.

4. Scroll down and tap on the X near the Facebook account information. In case no X is found, proceed to next step.

5. Tap on Facebook and authenticate your login "via the app" method.

These steps will get your account & games back.