Battlefield games stopped working, but I can still play EA Sports FC on my xbox?

Having the exact same issue, game worked fine prior to the season 1 update. Now I get the same undefined error and have tried all the same uninstalling/reinstalling/resetting as above.

Main difference is this is occuring on a linked family account. The game works fine on the same xbox on my main account. I get the undefined error issue on the second account (but this same account worked prior to update). Have a second xbox and get the same issue so definitely seems to be some type of ea account issue.