. . . make sure the sensor is in the right way.
A few years ago, I started using the sensor with velcro strapped to my shoe. It worked great. I even wrote about it.
Then I read the instructions more carefully. I had put the sensor in upside down.
Now I’m back from a run and want to post this before I forget. If you found this post because you are googling Marware pouch problems, I hope you find this tip useful.