I remove 2 of your exchange list on my exchange list.
Because they have some problem on the platform, you already describe the problem from the article. Honestly i only using 2 of your exchange Binance & Huobi.
I agree if Bittrex remove from the list because I have experienced problems there when deposit and the response from their admin is very bad and slow (
my personal experience).
but I do not agree with remove Poloniex from the list because until now I am still comfortable using it and I don't think there is a problem with Poloniex.