x10hosting is very much alive, however these forums however are mainly community driven support for free hosting and few that frequent these forums have access to the premium side of x10hosting (https://x10premium.com), are you able to login to the clients area at: https://clients.x10premium.com/login
If so putting in a ticket there is likely going to get you faster help, if not you should also be able to reach the premium support team by email: support@x10hosting.com
I don't know anything about any premium side. I am an original purchaser of 10xhosting from when it first launched. I was given access to the platform at https://app.10xhostings.com/login/ which doesn't work anymore, and also used https://green.10xhostings.com:2222/ which also no longer works.
We have no affiliation at all with them so we would not be able to point you anywhere except suggesting going to their site and seek any information there.