Coin listing and etc

I’m DIY user

Im just wanna check if want to list my DIY exchange on coinmarketcap am I able to do that ?

Let’s say if someone want to list their token on my On DIY exchange are we allow to add bep20 or erc20 Custom token and charge them a fee ? Can I do that ?

Let’s say I didn’t back up my server and lost everything what about my users ?

If I decide to close my DIY exchange , can my users be transferred to other Bitholla exchange ?