If you somehow still have your Claymore II unit, you can still fix it.
I’ve just had the same issue yesterday, my 2 row keys of QWERT and ASD is not working at all. The issues is not with the keys but with the bloated lithium battery inside. Somehow my lithium battery get bloated and you need to open the keyboard and change it yourself. After that you need to make sure that the battery case is flat again.
The battery you need to buy is this one ( C11P1707 Battery for Asus Zenfone Max M1)
you check guide on how to disasembbly the keyboard, just search on google.
hope this help