XDJ-RX2 Link Export Cue/Play button not working

Hi

I recently got an XDJ-RX2 and I found that the cue button is not working (Stopping the deck) in link export mode.

I am able to connect my Mac to the controller via link, and load songs into the decks which start playing automatically.

1. Is there a way to change the setup so that the songs do not play automatically when loaded into a deck in link export mode?
2. The cue button, is not working if I press it after loading a song into the deck in link export mode. I need to press pause and it works fine after that. I can press pause/play to continue playing the song and the cue button works after it. Any ideas why this might be happening?
3. If I pause the song, the audio sounds like if it is in a very small loop, it doesn't stops. The sound is Like if a 1/8-1/4 loop delay is activated. This does not happen in performance mode.
4. Is there a way that I can use the XDJ-RX2 as the audio output for my computer as well when it is connected? E.G. Play spotify, youtube, itunes through it. When I select the XDJ-RX2 as my audio output in the Macbook sound preferences the same 1/8-1/4 loop delay noise appears if I play audio from another source that is not rekorbox...

Any ideas on how to fix this problems?
Thanks