Hi Femmy,
Dit is een engelse mailing list dus graag je vragen en antwoorden in het engels.
Om die reden ga ik nu door in het engels.
To import a GPX route track you need to copy it into the OsmAnd folder.
If you are on Android 4.3 or earlier your osmand folder will be in the root of your SD-card.
Like "/osmand/tracks". If you are on android 4.4.x it will be in "/Android/data/net.osmand.plus/files/osmand/tracks".
(for the free version it will be " /Android/data/net.osmand.free/files/osmand/tracks").
From dropbox save your gpx in that folder. If that folder doesn't exist (because you have nothing recorded yet), simply create it.
You can now use the GPX track to calculate and follow a route.
Harry