“Returns” address

[mylove1221]

How do I change my returns address. It is not the same as my ship to address

[gorjuice]

I can not find the information to update my return address, how can I change my return address? I have to put PO box  for safety reasons but then i no longer own that po box and had a return address change and wasn’t able to update. Moreover a buyer returned an item to my previous return address what if it got lost?