PayPal is one of the riskiest payment methods and a favorite of scammers. Ask for ID with selfies and signatures and check for photoshop. http://fotoforensics.com/ It is best to call PayPal and tell them you are selling bitcoin as they allow it.
Via PayPal Payment was reverse this buyer is using compromised hacked PayPal Account to Buy from you, Do not sell to this Buyer...
It seems legit at fist I was geting money into my Paypal, but when I withdraw, It got REVERSE and Cancel.