To resolve the issue of "Could not connect to server" in Five Nights at Freddy's AR, follow these steps:

1. Check Internet Connection:
- Ensure that your device is connected to a stable Wi-Fi network or mobile data.
- Test your connection by opening a web page or another app that requires internet access.

2. Restart the Game:
- Close the Five Nights at Freddy's AR app completely.
- Reopen the app to see if the issue persists.

3. Update the App:
- Go to the Google Play Store and check for any updates for the Five Nights at Freddy's AR app.
- If an update is available, download and install it.

4. Clear Cache and Data:
- Navigate to your device's Settings > Apps.
- Locate Five Nights at Freddy's AR and tap on it.
- Select Storage and then tap on Clear Cache and Clear Data.
- Restart the app.

5. Check Server Status:
- Sometimes server issues can cause connection problems. You can check the current server status by visiting forums or the official FNAF AR social media pages. Notably, there have been previous reports of server closures due to performance issues - learn more - learn more.

6. Review Tapjoy Rules:
- The game may restrict access if Tapjoy usage rules are not followed (e.g., watching ads within a specific timeframe). Ensure that you comply with all rules to maintain connectivity - learn more.

7. Device Restart:
- If issues continue, restart your Android device. This can resolve minor connectivity issues.

8. Reinstall the App:
- If the problem persists after attempting all previous steps, uninstall the app and then reinstall it from the Google Play Store.

9. Contact Support:
- If you still cannot connect, consider reaching out to FNAF AR’s technical support for assistance - learn more.

Following these steps should help resolve the connection issue you're facing with Five Nights at Freddy's AR.