If your SonicPanel software has a license problem, showing license not found error when you login to the SonicPanel or unable to install the SonicPanel,
- Check if your ServerIP has an active license on your SonicPanel account. https://cs.sonicpanel.com
- Check your server internal connections, you should be able to ping sonicpanel.com under the root SSH of your server, if you are getting 404 error or not found after the ping command, you should check your /etc/resolv.conf file for possible DNS/Resolv issue, change the nameservers to Google DNS or contact your server provider support and tell them that you are unable to ping sonicpanel.com from your server, they will fix it for you.