There are several things you should know before asking a question to the coin owner, it could be that your question is misinterpreted, so you will be the one to blame in this case.

Check the coinmarketcap site whether it's registered, make sure the coin is registered and can be traded on the exchange, if after checking it's there maybe you can just ask, but to ask them first you have to praise, without being considered excessive.

I think people/owners of Crypto coins really appreciate everyone's questions, they will still respond well to all complaints, if we ask nicely, people will answer well too. Appreciating people is actually easier for us to get information.