On https://chevereto.oneskyapp.com/collaboration it is possible to help with the translation of Chevereto. So it was at least for version 3.x and for the website. Unfortunately, I am now missing the point for version 4.x. Maybe it would be possible to expand this there with if it is still...
Translation source is outdated since V4 beta, this is because I was expecting for a very stable release to continue with translations. I'm happy to announce (I encourage you to check yourself) that release 4.0.7 is rock solid.
😉 I will commit language updates from now on, and either push that to OneSky or to another system, I will properly announce it during March 2023.