Lemond revmaster pro

I have a lemond revmaster pro spinning bike with “supposedly” cadence and speed sensors (as I have the pilot computer which displays my cadence and speed). I bought the ANT+ USB to be able to pair with zwift on my computer. Via the app, I am able to detect the cadence sensor but not the speed sensor (even after pedaling the bike to “wake up” the sensors). Is there no speed or power sensor in this bike? My garmin bike computer isn’t picking up the speed sensor either.
Thank you in advance for your help.