Mistake "Fatal error / Invalid license»When entering the ISPmanager control panel may mean that your license file, which is stored on the server itself, has been damaged. This file is called
killall ispmgr wget -4 -O /usr/local/ispmgr/etc/ispmgr.lic "http://lic.ispsystem.com/ispmgr.lic?ip=184.108.40.206" killall ispmgr
Where is the parameter
ip - this is IP address your server.
After that, just reload the page and everything should fall into place - the license will work again.