Welcome to XF2 Addons. You can buy my Premium membership for $35 per year, and this gives you access to download any or ALL of the 300 add-ons that I have developed for Xenforo 2.x. In addition, Premium members will get technical support. Once the Premium membership has expired you can continue to use the installed addons on your forum as long as you like.
It would be great if user will be notified by alert, not only conversation
Quote from XF2 manual: "When a user is warned, they will only be notified if the moderator opts to send the user a conversation while applying the warning."