I recently purchased Komplete 13 Select and purchased the upgrade to Komplete 13. The download for Komplete 13 Select came within minutes, however, the upgrade to Komplete 13 has now been under review for 24 hours?
It seems the issue got resolved in the end.
Maybe you bought select on a working day so they put it through immediately (just a guess), i would wait until tomorrow. But i understand i also can't wait if i bought something.