JeppFD works fine with me and it does display ownship on every approach plate!
Make sure that you have selected to display ownship in the JeppFD settings.
Also, I use a Bluetooth DUAL XGPS160 SkyPro.
Seamlessly, never had a problem with JeppFD or DUAL GPS.
NB: JeppFD works on iPads only. JeppTC works on Android devices and TC has less functionality!
PS. If you still cannot figure it out, call Jeppesen tech support at +13033284274 or +18006315377 and talk to any tech support specialist. Good luck!