Currently the BTS tour is still postponed. Per StubHub's policies that means you are in limbo. If the concert ends up being rescheduled your tickets are good for the new date. If the event ends up being cancelled then you will receive a refund or credit voucher based on which state you live in.
fortunately both Colorado and California require cash refunds so if the event ends up being cancelled you should get a cash refund.
That is a question to ask of the BTS and their promotors. I had tickets for Styx and the event has been rescheduled twice and now postponed again. My guess is that BTS does not to reschedule the event and then have to postpone again.
We are in the same boat. It's delaying for 14 months and no updating on when BTS concert will be resuming. We have been calling Stubhub 4 times, still no updating on new dates whatsoever. Stubhub is keeping our money without doing anything! Our 2 tickets cost more than $1000. It's not cheap!! So ridiculous and frustrated!! We wish we didnot buy the tickets here.