Why my VDO panel not browsing After server Rebooted ?

Issue because of your server provider firewall. Plz kindly use below command after rebooted.

If the issue happened with you then flush firewall by this command

Login to your server via SSH

root login is a requirement, the installation will not function if you are not logged in as root or have sufficient sudo privileges.

Now Run the following command:

iptables -F