dam-s9 dvs issues

I can't seem to get my turntables to provide dvs signal to my DJM-S9 for Serato to function properly. Ive since tried hooking up both turntables, checked settings, set both channels to absolute updated firmware for mixer updated, computer to latest version of Mojave, updated Serato as well. Still Serato isn't seeing the DVS signal. I put a regular record on the turntable and changed setting in mixer to external and the record played fine through the mixer so I know the Needles and ground are good.