Hi Stephan, welcome to OSM

Could you please write more detailed changeset comments instead of "."? This helps others around you know what you've been working on! This page on the wiki may be able to help you:

https://wiki.openstreetmap.org/wiki/Good_changeset_comments

You can also make more than a couple of changes at a time, in case that's something you were worried about as well.

Diolch,
Ceirios