The measurement is free and always will be, because it costs nothing to run. What you pay for is the written protocol and someone tracking whether it worked.
It tells you which of your proportions sit outside a published range. That is a real, checkable fact about geometry. Whether it is worth acting on is your call, and plenty of people reasonably decide it is not.
No, and the tool is built specifically to avoid becoming one. There is no score out of ten and no comparison against other users. Reference ranges come from adult facial anthropometry and shift by ancestry, age and sex, so a number outside the range is a description, not a defect.
Nothing, because it never arrives. The landmark model is downloaded to your browser and the measurement runs there. Faceform receives eight integers and a country code, which is not enough to identify anyone.
No. Every item in a protocol is grooming, hair, skincare, styling or photography. If a proportion can only be changed surgically, the report says so plainly and then leaves it alone.