I sold an item to a buyer, sent first class mail, she received it and loved it, sent just fine Two weeks later, she purchased two more items, I sent them each separately via priority mail insured and sig conf req'd. Both showed up as the tracking number saying "could not be delivered as addresses, being returned to sender", I think it has something to do with the term RR in the address, but paypal didn't question the address (RR stands for Rural Route, which in this case is not in a rural area at all, it's in Austin) I have emailed the buyer many times asking if she received it, but she never responds. It's been a month since they shipped. I'm not sure what to do, should I file the insurance claim with USPS? Should I just print everything out for my files and see how it goes? What would you do?