Post dry age pellicle use

Actually I would be more concerned why you have mold on the meat at all! We recommend ONLY using a modern, frost free refrigerator located in a living area (i.e. not a garage or a basement) which is opened and closed on a daily basis.

Also was that meat purchased while still in a sealed cryovac package and not from a butcher’s or grocery store display case?

Was it disclosed that the meat had been blade tenderized? BTW meat internally is actually sanitary, but once blade tenderized any surface bacteria hasten been driven inside to breed and rot the meat.

My advice is to pay particular attention to the smell of the meat when you remove it from the UMAi Dry® bag.
Ron