Jumped through all those hoops early-on, but thanks for trying to be helpful.
Yeah, the optional vs required name fields had taken a shift. Following good advice on this forum about three years ago, I left all optional fields blank and my applications were accepted. Filling in optional feels seemed to get rejections regularly.
However, last December, when I tried this, I had two applications rejected. When I personally went to my immigration office, and presented them with the data, they said “Oh no, you have to fill in your FULL name including your given name and middle name for this to work!” There must’ve been some change in the system’s requirements sometime in late 2021.
BTW, I just received an approval this morning from yesterday’s marathon attempts. For what its worth, I had filled in all optional fields.