I've been blocked
If you've entered the wrong PIN code/password 3 times, you will be automatically blocked from accessing the email:
This is meant to protect the email's contents, by preventing intruders from applying a brute force attack to crack the email.
If this has happened to you, don't worry - the sender will automatically be notified and will be able to unblock you.
The email's content and attachments will not be lost.