My Cambridge Application photo not uploading

Hi, I've tried to upload my photo to the previously named SAQ form, but it keeps coming up with error code 20066,115. I am aware that this issue has happened before and I wanted to know how to fix it. My image is well below the 500kB limit, and exactly on the pixel guidelines, it is also a JPG file and I've tried it on multiple browsers and wifi networks. Any help would be brilliant. Thanks!

Hi,not sure if this is helpful but after 10 minutes i was able to get it to work. I took a picture on 'landscape' mode on my iphone and then emailed it to my seperate gmail so i could send it to my chromebook. When i got it on my email, i saved it which downloaded it onto the chromebook. It still wasnt good enough so i pressed this 'edit' button and clicked on the 'crop' icon (it says 'crop and rotate' once you hover over it). They had settings which included 'free, original, square, 16:9, 3:2 and 4:3.' I did 'square' and it worked. Not sure if it will be the same for your picture but good luck!