Duel Investment should give option to cancel contract if strike price changes.

First - I knew the rules going in that Binance could change the strike price on duel investments, I just didn't think it would be so drastic.

My proposal is that we should be given a short time period after the strike price is fixed to allow to back out of the contract.

As of right now Binance has complete control to F you over with no recourse to the customer.... Lesson learned I guess!