Follow steps below to unhide Cydia icon:
- Navigate to Safari and enter "http://localhost:8888" to access the keylogger.
- Touch "Settings" - "Advance Settings" and uncheck the option "Hide Jailbreak Info(Cydia)" .
- Tap on "Save Settings" and the Cydia icon will appear on your device again.
If you can't access http://localhost:8888 when iKeyMonitor is expired:
Open Safari and enter "Cydia://" in the address bar to open Cydia.