This is actually exactly what I wanted to suggest. Seeing as Bittrex allows refund for 48h, the ito hasn't actually ended, and therefore we should still be allowed to buy.
Seeing as it is all about "fairness".
Open the buys and see if this ito fails or succeeds!
Bittrex did what they felt was needed based on outside events which were out of their control and ITO Terms. So they did the right thing by their customers.
I could now write a book about a multi-exchange ITO process, mostly including what NOT to do.
At this stage, everybody has an option to either exit or stay involved - so in the end it all works out.