I do not know what size your images are but when opened they appear full screen. Our program will only accept images less than 5mb. You can see from images posted by others directly to the threads that they do not appear full screen. That is what I based my “too large” suspicion on. I do not know why the “File too large” message is not showing.
Seems like we tried all this in the IT Short Bus Forum without any success. It is what it is.

Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)