if you have forgotten the PIN it you won't be able to recover it anymore.
However if you have entered the wrong PIn thrice, you will now have the option to be able to choose enter new cc details and you will now be able to nominate your desired pin again.
If you were able to get the answer pls don't forget to mark the post as an Accepted Solution. If you also found someone helpful do not forget to give them Kudos to show your appreciation." None of us here are working for Boost or Telstra we are just here to help and share. -nefy-