I have the dji v1 goggles and remote with a air unit on a little 3 inch i was using. Then i bought the nazgul 5 HD that had the polar vista in it. So i connected that up to my v1 goggles and remote then I went back to my 3ing with air unit and it wont connect. Am i missing something here

I have the dji v1 goggles and remote with a air unit on a little 3 inch i was using. Then i bought the nazgul 5 HD that had the polar vista in it. So i connected that up to my v1 goggles and remote then I went back to my 3ing with air unit and it wont connect. Am i missing something here