I have owntracks connected to HA via the webhook. Owntracks reports status as ok and shows a 200 response from HA. However, the location does not update in HA. Occurs with two different users/phones.
Seems to be happening after the recent HA upgrade to .89.1
I think I kow this had the same. Check your know_devices.yaml. For older versions, tracking was working without an enty in it and then at some point they added it. If you have configured HA to not automatically track new devices, then it stop tracking after the update.