My apologies, for some reason I came to the concusion that this might be a London bus-lane PCN. It's not, so there is no Enforcement Notice stage.
However the PCN is showing as complete. IE closed. Looks like you paid £35 on the 10th April after you queried the Charge Certificate. Or perhaps they applied the existing payment on the 10th April.
Whatever, the PCN seems to be closed so there is nothing to do.
"Associated PCNs
PCN number BH86976963
Outstanding £0.00
Registration GJ60YVW
Status CC Sent
Date 10/02/2025
Street St Peters Place (Y)
Payment Status PCN is complete"
"PCN events
Date
Description
10/04/2025 12:57 Paid
10/04/2025 12:56 Offer £35.00 until 25/04/2025
09/04/2025 07:20 Charge Certificate Issued
26/02/2025 07:11 PCN Issued"