X Cube mini playing up?

[jjhwk_]

I've had my xcube mini less than a month now, and recently it's started to play up a lot. Especially today.

Every time I press 5 times to lock it, it actually turns its self off. Also it keeps reading random ohms and the past two times I turned it on it asks me 'is coil new'

I'm using 1.75 firmware. Any idea what's wrong? Could it be a need a new 18650? Any help appreciated