For the avoidance of doubt I would contact the authority. Just refer to to revoking order and has the authority referred the matter to the adjudicator. This is better in writing but if you phone then confirm in writing.
I would contact the tribunal instead, the number is 020 7520 7200, just ask if they've got a case for your PCN number.
If they have, ask them to add your email address to the case and also to change the communications preference to email, and ask them to email you a copy of the "
show us your reps" letter (they'll know what this is), and all the evidence from the authority.
If they don't have the PCN yet, try calling again after a week.