Reply to VCI-300 & serato itch problems

hey guy.
i'm new here starting with a question... (yeah, i already tried thesearch, i'm sorry).

i have a vci-300 connected to my macbook pro, newest version of serato itch.
itch doesn't recognize the controller, the button "hardware disconnected" is active.
i already tried by adding a power supply to the controller, but the controller gets it'S power by usb, that works.

the buttons are enlighted. sound is playing if i drop a file to itch and click the play icon, but not via controller...

...read about it's just plug and play, so i don't know where to search the fault, maybe you can help?


thanks for your attention.