FYI
if you set
# If true, all installed plugins can be queried from the webserver
Server_WebserverExposePlugins=Truein server settings your sever will be marked as "using OZ Plugins" on the server listing https://rw-servers.omega-zirkel.de/serverliste and Plugins are shown in details as well. For OZ Plugins i will add a functionality to display which plugin is up to date in a future update of the web-frontend.
Thanks, I just changed that.
Also regarding the plugin versions I'm using, I have all of the newest releases installed from this thread. I'll keep an eye out for an update to the marketplace plugin.