CHUWI Minibook CWI526 Keyboard Failure

Hi there…
I have a Minibook CWI526, rarely used… last week i started having problem, my keyboard doesn’t work, everything else is fine… I’ve tried to clean flex cables contact, but nothing seems to be working. I gave up, and put the minibook to rest.
Yesterday when I turned on the minibook, suprisingly the keyboard worked but only for a moment and then the problem started again.
I’ve tried to find supports, but nowhere to be found. I want to use the minibook again because it’s so compact.
Where can i find real service support and maybe keyboard repralcement here in Indonesia?
Any support person in this forum, please I need yout respon.

Thank you