I was scammed on another site about 5 years ago on a barrel. Don’t expect much help from the post office. I always paid with postal money order as I thought they would help, but it didn’t. I had to wait 60 days with the post office before filing report. I then got my local pd involved and they contacted the pd in a Texas town. My scammer used a identity from a local person and stole the money order from the mail box. Scammer kept wanting to know when money order would arrive, I kept pestering about tracking number.
I never did hear from the post office. My local pd closed the case after about 6 months.
Sorry about your loss
