On the category page for "Europe (en)", https://www.wikitree.com/wiki/Category:Europe_%28en%29 there is a link to the free space profile "Navigating Europe in Wikitree". Apparently, that page does no longer exist, it has been repurposed for a "Sandbox" but the link still remains and is still named "Navigating Europe in Wikitree".
Perhaps one of the projects involved should edit this link?
The space page profile name will still exist. Perhaps it should be merged with another with a more appropriate naming (just renaming it "Sandbox 2" will not do the trick).