That was the old way and I will say that way is not feasible. Under the old way, the domain wouldn’t really be allowed, period end of story.
Now, it essentially puts into a “quarantine” so to speak so that those who do have legitimate domains/use can be whitelisted.
Please follow unsuspension request guidelines
https://community.x10hosting.com/threads/this-board-is-for-all-unsuspension-request.209292/
Click on the green button of the service name and you will be informed of the reason for the suspension.