Thanks for your reply.
Sorry my english, I'm using the translator.
Unable to resolve the problem, and I want to documented here for future searches.
I detected the following: had a problem with the hosting plan, where only the customers who were in the plan, did not allow the creation of a new subdomÃmio and also adding new customers in this plan.
So I cloned a plan that worked, I made the necessary changes, and assigns the new plan to all customers who were with the old plan, and it worked.