If you’re using cPanel and find your statistics stuck, there are 2 scripts that will help you getting rid of the issue.
In order to update all your server’s bandwidth and other statistics, type the following command:

• /scripts/runlogs now

In order to update the bandwidth and web statistics for a specific username, type:

• /scripts/runweblogs <username>

Pretty easy, eh?

Some users may not be able to access cPanel or Webmail due to their firewall.
Some firewalls will block the secure/standard cpanel ports, which are:

• 2082 (Standard cPanel Port)
• 2083 (Secure cPanel Port)
• 2095 (Standard Webmail Port)
• 2096 (Secure Webmail Port)

A quick fix to this is to install cPanelProxy.
This script is made for people who use cPanel. Its purpose is to give access to cPanel (including webmail and WHM) at port 80 by acting like a proxy. (For people behind strict firewalls.)

I know you should now be scratching your head wondering how hard it will be to install it, but you should not. You can install it with just 1 click.

To do so, simply click here and fill input your account details there. It will connect to your account and install it automatically.

After it is installed, you should be able to access cPanel through http://cpanel.yourdomain.com and Webmail through http://webmail.yourdomain.com.