I recently made a post regarding a problem with Diablo 2 Resurrected and the new Warlock expansion. That post is now gone, and I am unable to make any further posts under the “Technical support” category. I find this to be the only way to voice any complaint about this current problem, as Blizzard support does not have any phone numbers for verbal communication about in game issues.
The original issue was the inability to play online in a private game on hell or nightmare difficulty. This is a problem with the new expansion that affects the whole game. This is around 45 USD of content that is now glitched and unplayable online.