The issues you mention are mostly the trading platform dependent. When you are choosing a reputed trading platform, you will not face any issues.
Not in bitcoin trading, but in my Forex trading I have faced the many issues like order is not getting executed and not connecting to live market are some of major issues, I have faced in my trading.
Well said and thanks for clearing that out. I think I forgot to tell the thing is altcoin to bitcoin and vice versa.
How about the live markets with different prices? How do you deal with it? Are you picking a website that sells it way cheaper even if it is not that reputable?
Both alt coins and bitcoins will be having different trading prices in different exchanges that is due to no one will be controlling all the exchanges at the same time. Prices are just fluctuating based on the trader's buying selling activities. So, we cannot expect same price across exchanges.
We can choose any exchanges but we must check their reputation before dealing with them. There are a lot of incidents, that exchanges scammed traders.