game center proplem

Hello MTawfik86,

We would like to see how we can help you with Game Center. Does this happen from both a Wi-Fi and a cellular connection? Did this issue just start? Which iOS version are you currently running? Go to Settings > General > About for the version.

Please force quit the app with the steps in this link and restart the device: If an app unexpectedly quits, stops responding, or won't open

Cheers!

Some things you can try. Do you have access to another WiFi network where you can try? That has worked for several people.

Try a restart.

Restart your iPhone, iPad, or iPod touch         

Try a forced restart.

Reset Device.      

If necessary

Hard reset.        

Do a backup and try a factory reset. Then restore from your backup.

Restore to Factory setting.      

Backup - Restore your device from an iCloud or iTunes backup.