Upload a GPX file and what happens ?

I have Upload a GPX (new road) file and what happens ? I can´t see it on the OSM ? I get an email that everything was allright
Why so difficult ;-(

Well, not much happens now. Your gps trace is now located in separate layer you can activate as a background, and use it same way you would use satellite imagery. Here is how you can activate it in ID editor (NOTE - screenshot image in article is from older version, in which gps background layer is not present, but nevertheless the principle is the same).
Related question:
OSM questions: is-there-a-way-to-see-my-gps-track-overlayed-in-the-map-editor.