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
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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