I checked back to see if I did that but I actually didn't. I have a background image with a foreground. They appear fully stretched and clean together in game maker but when I test the game they end up looking like this without any motion.
thats weird. im not experienced enough to say what could be wrong with it
by my logic your background should be scrolling with given values on the first picture, atleast thats how it works for me if i boot up a fresh map and just add those same values in the background tab
you could try it on a new room just to see if you can get it working there, it might help you to figure out whats the actual problem with your current room