PhoneTrack - Problem with share a session

In addition to this tread:

I start a session on phonetrack in my nextcloud-account and it works.
I use for example the phonetrack-app or osmand on my mobile to upload the location-data to my nextcloud. Everything fine.

Then i set a new user (no admin) on my nextcloud.
I share my phonetrack-session with this new user.
But when i login with this new user, on browser or on phonetrack-app, no session is to see!

I dont know what is wrong.
Share session with user seams simple. But it is not working.

Sorry, my fault. I fogort to press enter… :confused: