REKORDBOX NOT WORKING WITH DDJ FLX6

I WAS TOLD REKORDBOX 5 DOES NOT WORK WITH DDJ FLX6 SO I HAVE REKORDBOX 6.0 AND IT LIGHTS UP THE MACHINE BUT STILL DOESN'T WORK ,WHENI CONNECT WITH SERATO IT WORKS PERFECTLY ,PLEASE HELP,WHAT COULD BE THE ISSUE?