I received a new new mavic fly more combo on Jan 24th. Its brand new straight from DJI. Had all the stickers and everything on it. I notice that the serial number on the box is different than what the DJO go 4 app shows.. DJI go apps shows "Fligh controller SN". Should that match whats on the box?
Im inquriing because i want to use geo unlock and im not sure which serial to use?

The serial number on the box -- and what you should enter for registration -- is the one from the Mavic itself, not the controller. The one for the Mavic can be found in the battery compartment.