use pvr.stalker.nfps instead. it shoudl fix the offset for you..
if you cant though.. when you switch from NFPS 2 to NFPS 4. you have to go into file manger>profile directory and delete the epg cache from the userdata/addon_data/pvr.stalker . as well as delete EPG11 and TV29 from your database folder, then restart kodi