Hi Alex,
I am having this exact same problem, I don't have Disney+ through any tv package, I subscribe separately. In the last couple of weeks the app on my 360 box won't open, I get an error message along the lines of "there's a technical fault, please try again later" I spoke with Disney+ support last night and they asked me to do some tests, one of which was use the app on my phone and turn off wifi and use mobile data, it is then that the mobile app worked without issue. Therefore they concluded that the issue is with my broadband provider 'blocking' the Disney + app for some reason. Has there been a software update recently, as this has only been going on for the past couple of weeks?
