Welcome
@Chris B. I saw your post in the other thread unfortunately oldsalt hasn't been on this forum for over a year. He sold his EC Exceed. It is recommended to mount the dash cam away from the sensor setup in the windscreen. From memory the manual suggests mounting electronic equipment to the left or right side of the windscreen. Your location choice would depend on the field of view of your dash cam. The wider the better.
Opinions differ though. Some say that it shouldn't matter. You can try under the sensors but be prepared for some hiccups if you do. The GPS in the dash cam is likely the cause of any issues...
Edit: Had a quick check of the owners manual and chapter 6 has pages of warnings about the safety systems and systems. TLDR; I did read however that there should be no label, sticker or film in the area directly below the sensor area on the windscreen as it will affect the operation of the sensors and the area is shown in a diagram on that page. Check chapter 6 of the Australian owners manual. See the second column about not mounting electronics there either (below):