This mod need a option to disable the ctrl+rightclick on items to show it on chat, this flood all the server. You can remove this, add a cooldown or a option to disable.

If it floods your server tell your users off? Making sure your users behave isn't my job, really isn't it? xD

Let's say that some players don't know how to use this function and they need to be kicked or banned because of this.

Well yeah. After 2 or 3 warnings, a kick would probably be in order, followed with a ban on accounts of further violation.
That's kinda how server administration works. The admin makes rules, and if they're not followed, appropriate measures have to be taken.

But a disable option on config will be welcomed, I really like this mod.

I don't plan any updates in the near future. And honestly, I really don't plan any updates at all. 1.7 is done, I might rewrite it for 1.9