Incorrect indoor speed with elite trainer

Hi
I am using Garmin Enduro 2 and Elite indoor trianer with Speed/Power meter and on a bike which have garmin old style speed/cadence sensor (mounted on the chain stay with two magnets one on a spoke and one on the left crank)
And so far was working fine. until today.
After I finish a trainaing sesion I noticed that the Speed and Distance were very high
Avr Speed of 150+ KPH and distace more 80 KM

Does anyone has the same problem? and if yes