Android app and web planner won't synchronise though logged in

I registered yesterday and try Premium Gold. Looking for an alternative to komoot. I planned some tracks in the web planner for my upcoming bike adventure and saved them. I can see them in my account when loggend in in browser, but they don't synchronize with the android app. I tried logging out and logging in again in the app, didn't work. Has anybody an idea what the problem is and how to solve? Thank you!