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I had to start fresh with my VPN. I restored my backup. I can access virtualmin however, my website is completely inaccessible, both the domain and subdomain I have. At first, before I restarted, the domain worked fine but the subdomain displayed the main domain's page.
Restoring a domain restores the domain's old settings. Could it be your virtual domain was configured to use a certain IP and reverse, plus DNS entries, and they have changed now that you're with another VPS? If so, you'll have to edit them by hand (useful hint, adding a brand new website should allow you to copy-paste most of the stuff from new to ancient restored.)