Apparently BTC transfers actually wont proceed if they are late, and exchange rate goes down. I got lightning fast respond to my ticket, that id receive less or they can refund. But hell, 25 bucks alrd spent for the transfer, so I take less than refund in BTC.
I suppose previous times BTC has always rised, since it has been before 22. of dec.
15min window is bullshit, just saying.