Bike ride not recording activie minutes

[SunsetRunner]

This is the strangest thing, but for the last two days, it's recorded zero active minutes

This is a 3 mile bike ride taking about 20 minutes, with an average speed of 10mph , plenty of hills etc

14 mins in cardio 6 mins in fat burn average pulse 118

Same route back in May, about the same time, 17 active minutes

Any ideas ? (apart from peddle faster !)

[Rich_Laue]

My first thought would be, what does the recorded heart rate look like @SunsetRunner 

[SunsetRunner]

Looking into it in more detail, I'm actually becoming fitter, so I am not getting as many minutes in cardio, so its not recording it (some walks also the same when I looked)

So must try an push myself a bit harder now !