When you add your mobile number to Tap it will send you a verification code. Simply click the link in the text message and the app will open and verify.
If for any reason this does not work you can enter the pin code manually or re-send a new verification code.
You can do this by:
1. Clicking on your locker.
2. Clicking 'verify' next to your mobile number.
3. Putting your code in the box under 'Enter Code'.
4. Or send a new PIN by clicking 'Resend PIN'.