Other ASG Bersa BP9 problem

Looking for a source to repair a malfunctioning Bersa BP9 CO2 pistol.

It holds CO2 but after cocking and shooting one BB, with blowback, the gun does not re-cock or shoot and BBs fall out of the muzzle. If I re-cock by cycling the slide, I am able to get another “shot” but likely with two BBs.

I myself am not qualified to take my airguns apart, so if anyone here is a confident “airgunsmith”, or knows of those who do such things, I would be happy to send the gun on for whatever agreement is deemed fair. I will of course reach out to ASG, who apparently makes this airgun, and see if they have resources for repair. Many thanks.