I had Rekordbox 5 and could control it with my CDJs-350 no problem. I'd start Rekordbox, connect the CDJs and it'd ask me to select Deck A or B on each.
Now I've upgraded to a Rekordbox 6 subscription and the CDJs just display "Control Mode Connect" and stay there, do nothing, no pressing of buttons change anything.
I'm really disappointed as I need to use this on a daily basis and now there's not even an option to go back to a Rekordbox 5 subscription! On your documentation, it says CDJ-350 are supported.
I am using a 2019 Macbook Pro with Mojave. Everything worked perfectly on Rekordbox 5. I am using the latest firmware with the CDJs.
Any help would be much appreciated.