Hi there. I have an Active 2 watch. The ECG worked fine until about a month ago. Now it doesn't work at all. I open the app on my watch and click on OK to proceed then it keeps telling me to touch the top button (the sensor). It now doesn't register that I'm touching the sensor and after a while it tells me to try again. It's as tho the top button sensor has stopped working. I have uninstalled the app and reinstalled but still to no avail.