I know this is a very difficult situation to be in for Blinks, but I believe YG should move ahead with the comeback anyway. Delaying won't do any good, who even knows how long this investigation will be dragged- if anything, I fear more stuff might come out in the meantime.
April is crowded af with BTS, Twice and IZ*ONE, so maybe they might be thinking May? But I'm not sure how the Coachella stuff is going to work- I'd rather YG went ahead with a March comeback itself though it's looking impossible now. And there's always the possibility of them being asked questions related to all this in varieties- but I mean it's Blackpink, promoting on all varieties isn't necessary to be successful.