As has been noted in multiple posts in this thread, including the one directly above yours, the webCoRE Presence sensor app does not work with Android Oreo and above. It has been effectively abandoned and appears unlikely to be revived.
As has been noted in multiple posts in this thread, including the one directly above yours, the webCoRE Presence sensor app does not work with Android Oreo and above. It has been effectively abandoned and appears unlikely to be revived.