Also, the shapekeys on the sidebar, I cant animate them in the timeline, what do I do?
With the facial rig, there's one bone that slides me mouth hole over the mouth surface. Btw the wide mouth was intended to be controlled with the custom properties of that bone, this can be removed if you want but I think that was your issue.
If you want to add more shapes to the mouth then you must add more shapekeys, I recommend watching tutorials if you don't have experience with them.