It should work the same way. It's the same app. What browsers have you tried? Have you checked developer console for errors?
It shows that:
ext-all.js:22 GET https://traccar.agroaktiv.de/api/session?_dc=1633371734949&token=jfqgCIf43mO8clIJWnnQYDDJPb0o6FNW 404
It doesn't work for me on desktop either. Probably indicates that the token is incorrect.
Thank you very much for reply! Probably it was my fault. I changed token and it works.
I followed instruction at User Management documentation and generated token to login. It works well an desktop, but doesn't on mobile browsers. Any suggestion how to fix that?