Maybe they wouldn't let you buy since it has a big warning on http://www.otcmarkets.com/stock/TWAIQ/quote about being bankrupt? I mean, I KNOW you KNOW it is, but maybe it's a red flag to them? Just a thought I had....
I know for my broker (Fidelity) I had to verbally sign a waiver to buy Pink Sheets stocks in general, so maybe you have to do something similar? Due to the heavy risk involved?