Hi,
From a quick a google this appears to be a bluetooth keyboard, is this incorrect?
If that is the case please provide debugging https://osmc.tv/wiki/general/how-to-submit-a-useful-support-request/ showing an attempt to pair via MyOSMC.
Also it may be worth trying to pair via the command-line:
DBMandrake provided a good howto for this a while back, this can be found here.
Thanks Tom.