No rig option when importing .glb?

2 part question:
part 1:
When I use gltfast to import my glt RPM model to unity I do not have the option to set the model type as humanoid so I receive the error “avatar is not imported as humanoid rig and will not play VRChat’s Provided Animation set”
Clicking on model in assets after importing with GLT:

VR Chat Error
image

Converted model with Convert GLB into FBX | Avaturn | Developer Docs

Clicking on model in assets after converting and importing as FBX allows me to select humanoid animation type:

part 2:
does any part of my workflow remove the jaw? I saw on another thread that the model did not have a jaw and they had to download using the &viseme=oculus so I was sure to include that in my URL when downloading my avatar.

any help to fix this would help a ton, thank you! Thank you.