Sorry, but I didn't find the answer to my question.
1) Is it a problem to use exchanges like binance for myslim

I do not think that this question is relevant in this thread. This is a branch of the project, and not the problems of Muslims using the Binans exchange.
It is absolutely relevant question. I can't get point as well, because Adab suggest muslims to use their exchange and there are some problems in this space