Ive used ChangeNOW Godex and SimpleSwap in the past few years but lately things dont seem right. More slippage unclear fee breakdowns and strange delays even though the sites say exchanges will happen instantly. I just tried to trade BTC for USDC and I got a lot less than I thought I would even after paying the network fees. Is it just the market going up and down or are these platforms getting harder to understand?
I have not used ChangeNOW Godex or the SimpleSwap before so I can not talk about their reputation but if you haven't been having a regular smooth services as before, it could be network congratulations which had caused the delay of processing your transactions and transaction fees would increase for miners to facilitate on the network transaction otherwise, your transactions will be delayed longer than what you got when you got higher charged.
Also note that exchange values of bitcoin varies severely in due time. So there is always a price change when dealing with an exchange vendor.