Cant Sync crossdj with cdj 2000

Hi couple questions firstly downloaded Mixvibes Cross DJ today full paid version and cant find serial number to register
I have 2 cdj 2000 and djm 800 mixer
Running a mac with Cross DJ
I got mac sorted and synced the decks but it only play deck a, wheni go to use deck b loads up the song but when i go to use the deck play pause etc it controls deck a on the cdm
Pioneers have latest firmware 4.20 so the Pioneer software is right
audio device it only lets me pick 1 2000
routining mode i have chosen external routing mode
so I can play one deck only and not the left deck
any help would be great as I have looked everwhere on you tube and google, but facing the same problem
Thanks
Mickey
I have 2 cdj 2000 and djm 800 mixer
Running a mac with Cross DJ
I got mac sorted and synced the decks but it only play deck a, wheni go to use deck b loads up the song but when i go to use the deck play pause etc it controls deck a on the cdm
Pioneers have latest firmware 4.20 so the Pioneer software is right
audio device it only lets me pick 1 2000
routining mode i have chosen external routing mode
so I can play one deck only and not the left deck
any help would be great as I have looked everwhere on you tube and google, but facing the same problem
Thanks
Mickey