So no, it’s only subscription games that would be affected? So you just can’t use the service in the future, they’re not locking anyone out of a purchased product.
Diablo (at least 3 - excluding the console versions and 4, not sure about the older ones) is an online-only game, if they’re locking you out of your account, then you will not be able to authenticate to the game server and thus won’t be able to play.
Diablo is indeed a single purchase game (with tons of MTX and soon to be DLC of course, but the base game is a single purchase).
So no, it’s only subscription games that would be affected? So you just can’t use the service in the future, they’re not locking anyone out of a purchased product.
Diablo (at least 3 - excluding the console versions and 4, not sure about the older ones) is an online-only game, if they’re locking you out of your account, then you will not be able to authenticate to the game server and thus won’t be able to play.