VALIDITY OF AN EbAY TRANSACTION

Hi to all,


I am knew to eBay with 15 positive transactions & one unfair negative feedback that has reduced my feedback %, drastically to 94.1%.


 I recently refunded a paypal payment from a winning bidder who would not confirm his identity or shipping address; also this user had hidden feedback & was unresponsive to any of my questions.


 


As a result the user left me negative feedback.


My issue is..since the user had a post office box as his paypal shipping address...is this valid under eBay/ Paypal policies?


I did read somewhere that a P.O. Box address is not a valid address/ shipping address, therefore if this is so, then the negative feedback left me, under these circumstances  should also be invalid ?


 


Do I have a right to have this feedback removed, as my requests to date have not changed anything, but left me with a damaged credibility.