Yesterday, while on break, my go-go was working fine. Then it suddenly stopped working. A few minutes later it started working again. Today I can't get it to work at all. The battery is fully charged. The carto is fairly fresh. The button lights up when I press it, but the battery is not firing up the carto. No vape....nothing. I am having this same problem with both of the batteries I received and I've tried different cartos. Any suggestions?