Models with more than one expression

[ElmerFuddFan]

I'm 90% sure the reason motions don't work is because the bones aren't named according to what the motion expects.
There's apparently a bone renamer according to this guide: https://github.com/powroupi/blender_mmd_...del-to-MMD but I couldn't get it to work. :\
Also here is the fbx (its basically the same as the mmd model but without the morphs for the expressions)
https://drive.google.com/file/d/1H4Qi-JH...sp=sharing

Is there a way to automatically rename bones? I don't see a "bone renamer" on the website.