Did you check the status of the servers before posting (Server Status).
If it is online, try using FTP to modify the website. I would recommend of adding a http file manager to your website, and to protect the directory where it is with a password.
If what I understood is correct, you are not receiving the registration email from x10.
Don't panic, x10 reduced the number of new account because of updates and upgrades that it is doing to the whole server pool and services.
x10 recently moved the official support for already registered members to support.x10hosting.com, but I think that they still monitor this forum once in a while.