Thanks for all this.
I have an account at MusicBrainz and I have edited the release. But I am not really sure if the Roon database is from there.
I believe it adds up a lot of databases in order to come up with the final one. (See here for more details: Access to the full Database - #7 by anon47919701 )
So, I will do the edit locally, but I would really like the option to correct if something is wrong in order to transfer it to the entire community.
So, maybe that could be a question of a different thread, but is it possible to do so?