Kano Computer Kit Touch: Keyboard issues

Since I bought this product we faced multiple issues. One of the most annoying issues we have is some of the Keyboard letters don’t work sometimes, especially N & M letters.

Any idea how to fix this problem?

Thanks

Yes , I’m also faced multiple issues with battery, speaker, now some of the apps freezes the screen ,this issue is still not fixed ,still no solution, [Kano Computer Kit Touch]) is poor quality defected product and I lost my money for nothing …

Regards ,