Can you check in your account tab that the game actually shows you having a full Gold subscription? People have been misremembering for how long they bouught a subscription (because for a time you could not buy farther into the future as end of 2019), or misinterpreting the date format. The account tab shows all expansions you have in color.
OTOH, similair complaints are popping up, so there is a good chance there is a problem. But I want to make sure this is not a false alarm (as happened too often in the past),