I can not enter the online file manager of the cpanel

I get the following message when I enter online file manager
You can not access this website
Page has rejected the connection.
Try to:

Verify the connection
Verify the proxy and the firewall

Can someone help me please

The file manager in the control panel is working fine from here. Please check with your internet service provider whether they are blocking access to our servers.

You may also want to try the file manager in the client area instead.