Aspire pockex orange light on fire button

Hi,

I got myself a pockex and now after a month I am experiencing an issue.
So basically everything worked fine until a couple of days ago... When i was charging the device, the battery led was constantly switching from red tot green. When it stayed green, i started vaping but when i pressed the firing button it was orange, i tried a couple of other times and when i press the firing button i get 15 flashes of the orange light on the firing button. Ive been reading a bit on this forum And it looks like this is a battery issue? Is this a battery issue or what is the issue here? When i put my charger in, the battery led stays green, so i guess the battery isnt charging anymore? Is this normal after only a month of useage And what can i do about this?

Kind regards
Dieter