The Timberwolves have been sued in Minnesota state court by two named plaintiffs on behalf of a class they define as all purchasers of Minnesota Timberwolves tickets from 2015 to the present who have been required to use the FlashSeats platform in order to access their tickets.
The Wolves are the first team in the NBA to go to an exclusively electronic ticketing system, something they introduced this season. There are no longer paper tickets available for Timberwolves games, rather everything is handled through the FlashSeats app. I have seen many complaints on Twitter that this system makes it much harder to transfer tickets, and speculation that the particularly empty Target Center is at least partly due to the FlashSeats system.