You are no longer allowed to create support tickets.

You are no longer allowed to create support tickets.
The support system is unavailable for this account.
can u tell me what happend ?
i lost two items and i can't create ticket to get it back? please help me~

That message means you abused the Support system to the point your account was banned from using it ever again.

How can i use it again ?i lost my tiems and GM keep Ignoring my request ? what should i do

There's no using it again.
Aside from time traveling to the past and warning yourself to not abuse Support, all you can do is take it as a lesson.