Under certain circumstances, you receive an error message that the PIN is invalid. There are several reasons that could have caused it: - You have not set up the 2FA correctly
- You entered an incorrect PIN.
- If not one of the above, the next most likely cause that the PIN you entered has expired.
When a PIN is generated, it is current for a 30 second block based on UTC time. The UTC time is based on the time on your device. The PIN you entered must have been generated between 5 minutes before current time and 5 minutes after current time. This means your phone time must be quite close to the time on the server, if not exactly. If let's say you set your phone time 10 minutes ahead of actual time, the PIN you entered may not be accepted.
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