CoD Cold War Xbox Error Codes

Hello! We bought Cold War for the xbox x upon it’s reease date and have played it issue-free until yesterday. I completed the campaign at last, and the next time I logged in online, I played split screen with my husband on zombies outbreak. Every time we’d get to the next round, it would kick me off Cold War and back to the xbox menu screen. After that we played offline with no issues. The next time I tried to play online and connect, I couldn’t make it past the main main screen as it would kick me off the game each time to the xbox menu screen. I tried everything recommended. We reset the xbox, deleted both accounts and reset those, cleared the cache, reset wifi, reset the power supply (twice), cleaned the disc (which is in pristine condition), and looked up other methods that all failed to solve the issue. Our xbox is up to date and practically brand new. It is well ventelated and has no obvious defects. After reseting it each time, we’d get new error codes randomly from 0x82d40004 to0x87de272b to 0x80070490. Now it is back to kicking me off the main screen when trying to log in online in Cold War and only allowing offline play. We have an up-to-date online membership and all xbox servers were fully functional at each point in time. Other games, both disc and online downloaded, function perfectly. I want to be able to play online with my account that I’ve gotten far on and not have to make a new account. Is there anything I can do to resolve this issue? Any help would be much appreciated, thanks!

:)