Hi! I recently purchased a mini istick, I love it and it was working great until for whatever reason the LED light will hardly ever work and you cant take hits off of it at all. It is completely charged acting like it is dead. If you press several buttons over and over and over it will eventually light up for a couple seconds to take a hit or two then just shut off again so you have to repeat the process. It isnt locked or anything, you can hold the button down, nothing. You can press it 5 times in a row like you would to turn it on and off and nothing. Only time i can get it to even turn on for a second is pressing the arrow buttons and it will display battery then just shut off again usually. Not sure what else to do please help 