I poked around, and saw that they were charging relatively insane prices. Like someone commented that, at the same venue they saw tripleS at for $65, Soojin's tour was asking over $100. In another city, Dreamcatcher front row was $250 and Soojin was $500 at the same venue.
Which is just insane. Dreamcatcher is (was) an established touring group with a massive discography; you knew you were going to get your money's worth with them. tripleS has more singles than Soojin has total. Soojin's touring company is crazy if they think they can ask more than twice what her more established peers are asking.
And that's not even counting the concert competition in North America right now (why I will forever lament these groups targeting the exact same cities constantly...). Tons of smaller groups are having their tours canceled or stops canceled: TIOT, Seori, n.SSign, CIX, Omega X, Vanner, Young Posse, Ghost9, POW, Everglow... (I did a search in Reddit for "tour + cancel" in the past year and excluded any artist who gave an actual reason like "severe weather" or health issues.)