If a No Caller ID, Private, or Blocked call does not appear in MaskOff, start by checking your setup.
Open MaskOff Settings → Check my setup.
Decline the guided test call when it arrives.
If the check fails, follow the remediation shown in the app.
Then check how calls are handled
Decline the call. MaskOff needs the incoming call to be declined so it can be processed.
Turn off Wi-Fi Calling. Then repeat activation using your mobile network.
Check iPhone call features. Turn off Live Voicemail and Call Screening if those settings are present.
Confirm the call was actually blocked. MaskOff cannot find the true source of a spoofed number that is already displayed.
Metro customers: Complete the carrier prerequisite in the dedicated Metro guide. If the problem continues, restart your phone and complete the guided activation again.
Contact support from the app if the test call still does not appear. Include your carrier, device type, approximate time of the test call, and any activation error shown.