why is the Edge 820 no longer compatible for stretching?

Stretching?  Like stretching muscles?

It's a bike computer, not an activity tracker or sports watch.

Also, this question would be better on the Edge 820 forum. forums.garmin.com/.../edge-820

No longer? Has it ever been compatible with stretching?

What is the activity type for your stretching workout? The Edge is only compatible with Bike workouts so a trick could be to create a Bike workout that you call stretching.

Hello everyone, the point is that bike routes can no longer be transferred from the carmin connect app to the Edge 820. Carmin Connect suddenly says "device not compatible"? in carmin connect online it works. it is still annoying.

Well that has zero to do with the subject line.

Have you tried removing your device from garmin connect and re-adding it?