Your connector, according to the website, should be correct.
You may want to double check it as they are often mis-labelled.
Have you tried to optimise the gain settings? You may be picking up too much signal with the FA antenna and that is causing the Dongle to be overloaded.
75 OHM top(it has a smaller diameter centre pin). 50Ohm bottom. The FA antenna has a 50Ohm socket.
From N connector - Wikipedia
If you install wiedehopf’s graphs then you can get a better feel for the differences between the antennas and gain settings.