I've tried about four exchanges so far, and I had major problems with three of them (coss.io, shapeshift.io, and Kraken). GDAX is the only one that has been smooth for me.
That said, which exchanges do you find to be trustworthy? Are there any others that run smoothly?
You can use bittrex but now bittrex close to new registration.If you create an account you can use this exchanger or you can also use kucoin or binance or youbit