Chromatic Mask Tracking and Keyframing does not work

Hi all,

I am trying to track (and mask) someones face using Cormelt Chromatic but the shape I drew does not track at all.
So I decided to just use the key framing feature.
I ticked "Use Mask"
I Disabled Moca Tracker
Drew a shape
Switched on Manual Key Framing
Placed the shape on the face > blue dots got a yellow center to confirm keyframe
Scrubbed to another frame a few times and replaced / reshaped the mask > each time a new key frame was made automatically.

After doing all this the shape does not move at all during playback or scrubbing or stepping through the key frames.

I read about a similar problem someone was having in 2017 but the post suddenly changed subject and no solution was found.

What am I missing?