Right... Here's the thing: why is the actual version just completely unavailable? While the mod itself has the link for said secondary mod still there without a proper warning, like "this mod is under maintenance and, until ready, remains unavailable"?
Except for the fact that we did, in fact, this has already been announced in several places, on the mod's main page on Nexus, in the patch notes here on itch.io and even on the subdue link itself (the one here on the wiki, I imagine you clicked on it) when you click on it, a notice appears that it is being updated:
So I think you might have missed it. Whenever one of the mods is updated, the other goes into maintenance. Subdue is a separate, more complex add-on, so the delay is necessary. But it is already in final testing and being optimized. The expectation is that it will be back in up to a week, all that's left is to finish the racind. We almost there, yeeeee!