Hi there! I'm here to help you with your POP! Slots connection issue. I understand that you're seeing a "connection failed" message, which can certainly be a bit puzzling. Let's work together to troubleshoot this.

First, could you tell me if this issue occurs when you're trying to log in or if it happens during gameplay? Also, have you recently updated your game or your device?

In the meantime, here are some basic steps you can try that might help resolve the connection issue:

1. Check Your Internet Connection: Ensure that your device is connected to a stable internet connection, whether it's Wi-Fi or mobile data.

2. Disconnect and Reconnect to Facebook: If you're using Facebook to log in, try signing out and then signing back in. You can do this by going to Account > Sign Out.

3. Clear In-Game Cache: This can help refresh the game. You can usually find the option in Settings > Delete Cache.

4. Reboot Your Device: Sometimes, simply restarting your computer can clear up connection issues.

If these steps don't resolve the problem, please let me know, and we can explore more advanced options together!