Long descriptions bur key points are missing, Reading further comments somewhat clears.
1. Audiogon and paypal are involved.
2. Delivery Address taken from Paypal?
3. 'Measure twice before cut' not used.
3. Delivery address is apartment or forwarder not sure.
4. Second delivery has been taken and has done felony. Seek police help. @grislybutter
5. First and second buyer are same and tricking the system?
6. seller from where he got delivery address is responsible, Rise the issue with Paypal/Audiogon.
7. It is not 'ship another package'? @carlsbad2
8. Issue should be resolved with PP and AG.
9. How second buyer lives in NJ and has delivery address of Washington(that too same as 1st buyer) and claim not received. seek police help.
10. what seller has proof of delivery by Courier company. Does leave at door is authored by the buyer?