“There were some reports of server issues and login queues, though most were able to get on within the first few hours of the expansion’s launch. As a result, the peak numbers are likely to be a fairly accurate representation of The Final Shape’s appeal.”

Press X to doubt. Even if you managed to log in, it was hard to actually play the campaign without getting booted. Everyone I know or have heard of (e.g. streamers) had issues with it.