Some Questions

maybe i've a problem...
I want to purchase a licence for my BeagleBone Black but the cpu serial number contains only zeros (BeagleBoneBlack,s/n=0000000000000000,1 device) and only the RPI server works on it (installed ubuntu and maybe this is the problem)
if all this is no problem how should i buy the licence? with the beaglebone option or the raspberry pi option? and the whole sting or just the cpu serial?