the screen isnt working for me, even those that worked for me before
Hi! 
welcome to the forums! That looks like a code error! It could also be that you are on preview.glitch.com and that is still in development!
Not necessarily, Anything you do in preview.glitch.com is automatically forwarding you to the main glitch.com stuff not the preview.
Really? From the screenshot, the pink buttons seem to indicate the preview colors.