I have an existing listing ASIN: B0C4V77PYY which has been active for a few months but is now throwing the 8572 error.

Unfortunately, I purchased the EAN number from what I've now realised was a reseller, so I don't have a GS1 certificate and the products are in FBA so I can't take a picture to show a relationship between the product and the EAN.

Please advise on how can I move forward. Should I delete and relist with a GTIN exemption or a new EAN number with a GS1 certificate? If so, how would that impact my inventory and how can I link the new listing to the inventory in FBA? or should I do something different? Please advise.