I'd hate to blow up my setup when its working for me otherwise, but sometimes it maybe worth the effort to do a clean up just to get rid of crap that you don't really need. Saying that, because the system is not yet 'for pay and live', and that the stalker client is not yet up against that production service, if you can't get the add-on to work, try emulation. Before that, I'd check to see if any other PVR client works on your Kodi, if only to rule out the possibility that the PVR functions didn't get installed properly on the conversion from 13.x to 14.x, or do an overlay re-install of Kodi 14.x.