EDIT: oh, I realized I have a question for you, too - so, I bought this like disposable USB-chargeable vape pen, and it has a lot of juice left, but I've noticed when I suck to get it started, it just won't "hit" or heat up ... it's like there is oil clogging something that is necessary to get it started?
Sometimes I have to suck really hard for minutes to get it going (there is no button as far as I can tell to get it started).
Any suggestions on how to get it to work more reliably? Am I supposed to be cleaning or maintenance-ing this pen in a way I don't know about?