offline not working

Does that content require you to be connected to XBL in order to use it? If so that may the case. Otherwise since you already did the license transfer and re-downloaded the content afterwards you shouldn't have any issues. Perhaps a call to support
to see if they can suggest anything or tell you what the problem is?

Can you try downloading the update to a different USB drive? Maybe your USB drive is corrupted and the update can't be installed.

If your USB drive is however working and the console still can't update, the internal hard drive of the console might be corrupted and the console needs to be serviced.

If that's the case, you can sign up the console for repair at
https://devicesupport.microsoft.com

Hiii @Tiptoecool! Hope you are having a good day! Anyway, Thanks for coming to the forums. With an Xbox console, to play offline you need the console set as home and need to select go offline in network settings. The reason for this is it lets Microsoft/Xbox know you are going offline. Then you will be able to play any game that has single-player or local in their description offline. Here is the support page for using the console offline.

If possible try connecting to the hotspot go offline and change the home console. Then you should be good. Since they are game pass games, you technically don't own the games yet so you would be required to be online.

I did what I suggested in the link above and disconnected my router and went completely offline.

The maps were in my game options. Are you definitely sure you actually downloaded the maps and not have them just in your list ?

Some games you have to MANAGE the game on the console and actually INSTALL the maps after you download them.

I mean black ops 3 not flack