And they have kept the game up. People have been getting cheap mats and getting in line for the preorders, but a sizable class of users (everyone who uses windows 7 and some who use windows 10) can't use the marketplace AT ALL. This puts those people at a significant disadvantage. They have been "looking into it" for the past 4 hours and haven't said anything beyond that at all.
You can't play if you can't sell anything or buy things.
I don't think I have ever seen a game (and I have played a ton of them) keep a game up when 30% or more of the playerbase can't play the game. When that happens the game comes down for maint until they fix it.