It has been about 30 days after I received my first free monthly crate (Jan 14- Feb 14). I logged in using wynncraft forums and logged in my minecraft player username, I then clicked free monthly crate and the website sent me back to the store. I clicked free monthly crate again and it was the same result. I then logged into the wynncraft server and noticed that I have no crates. I am not sure if the monthly system timer mechanic works by using wifi or your minecraft player account since my friend, using the same wifi, received his crate. I do know that the wifi timer mechanic was a problem in the Hypixel server several years ago when I attempted to receive monthly items from there.