Why can't I use Mexc?

I've been hearing a lot about the cryptocurrency exchange Mexc, but for some reason, I'm unable to use it. Could you help me understand why this might be? I've tried creating an account, but I'm constantly getting error messages. I've also heard some concerns about its security and reliability. Is there any truth to these rumors? As a professional in cryptocurrency and finance, I trust your opinion. Could you enlighten me on why I might be facing difficulties using Mexc and whether there are any better alternatives I should consider?