What the problem is once you click on Control Panel home and write your password only leaves this message:

Account Login
Your account login has been successful, please wait while we transfer you to your account!

And I do not enter into this case

You just need to wait a little while, about 10-30 seconds sometimes. Sometimes the server may be down, but it is usually for just a couple of hours.

yes sometimes there is a little slowness but if it says login successful, you can usually just go back to ur zcp and press on your site. it might work then.