1 = Someone I delivered goods online asked for a refund. Then he approved it. Can he now ask for his money back a second time?
2 = Someone also received goods online, and is now asked his money back to paypal, what can I do about this?
3 = How long does it take for any money I receive to be deposited to be all mine? That no more claims can be made?
That depends on many factors all listed in Paypals seller protection policy for you to read so you can risk assess your transactions. Legal (bottom right of Paypals pages) > user agreement > seller protection.
Advice is voluntary. Kudos / Solution appreciated.
