Sent return envelope with return address of Fedex office. Is it a problem?

Hi,

I have sent my passports with return address as Fedex location close to my home. I thought that should be fine at that point, but I am wondering if CPC-O have any issue that it is not matching my address in the application.

  1. Do you think this will be any issue?
  2. My passports reached CPC-O yesterday (April 2nd). How long it could take for them to approve and send them back?