Don’t worry, this can happen sometimes.
Once we’ve sent you a PIN it’s only valid for 10 minutes, so it may be that your PIN has expired. Please request a new PIN and enter it as soon as you receive it.
If you have tried to enter the PIN on multiple occasions without success, please wait for 10 minutes before requesting a new one. If you need any help, we’re here for you 24/7 on: +44 (0) 20 7847 9494