Check Legacy Inner Circle app permissions. If any of these permissions required to use your device's features are disenabled, Legacy Inner Circle might not work.
Uninstall and reinstall Legacy Inner Circle. If nothing else has worked, completely uninstall Legacy Inner Circle then reinstall.
Restart your device. Last, restarting your device can often clear most problems causing Legacy Inner Circle not working
2. Fix Legacy Inner Circle Server issues & Internet Connection
Check network connection: An unstable Internet will make Legacy Inner Circle be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
Disable VPN: VPN can cause connection errors and lead to Legacy Inner Circle not working. Make sure all VPNs are off
Enable background data: When Background data is turned off, Legacy Inner Circle may not be able to connect to the Internet when running in the background.