What's the URL/control panel for my resold client to login?

Reseller Plan
If you are using our new control panel, please go to below link.

Your clients can login to the control panel at http://member.mysitepanel.net

How do I get my own URL?

You can simply setup a CNAME record for member.Yourdomain.com to point to member.mysitepanel.net and you'll be able to use http://member.yourdomain.com
Login to your hosting control panel-->DNS manager to add the CNAME record.