Since updating to version 24.19, I've been having constant problems with Komoot synchronizing new routes. Someone invites me on a tour and I confirm. The route is displayed in the Garmin Connect app, but is not transferred to my device despite being synced several times. If I then duplicate the route in the Connect app, both routes are transferred at once.
In addition, I used to be able to simply send the route from Komoot to my device. That no longer works either.