Projectyoko

Alright so, I have an issue with both my Vapor cig, and a friends too. My vapor cig isn't vaping anymore, I refilled it, and put it together just like usually but won't produce any vapor. And for my friends, his Vap is brand new, just got it yesterday, our batteries both died, and we put them on the chargers, when they both finished, the light works for his and everything normally but as soon as he puts his chamber on his, the blue light flashes three times every time you press the button. And it is fully charged. I can provide more info but any help is very appreciated.