Trading of crypto currencies is done via a market maker. This is not an agency transaction where prices are matched (like in an equity transaction). Therefore, please be advised that limit orders are NOT GUARANTEED to be executed even if the last price shown falls within your limit.
Limit BUY orders will only be executed if your limit exceeds the offer price.
Limit SELL orders will only be executed if the bid exceeds your limit.
Cryptocurrencies are not regulated by FINRA, SEC, FDIC, SIPC or any exchange or exchange member.