Problem is that these are .HIEC files and the board version we are on doesn't support them (not sure if newer version do or not). But if you convert them to .jpg files it will work! I downloaded one of your images and converted it to jpg. Then you just attached them like you did the .HEIC files, and click on the image in the box below and it will show up. I did check to see if I could get the board to render .HEIC files, but doesn't look like this version supports it.