Sticker Header and Lead Source scripts not working anymore

Within the last couple of weeks, I’ve used scripts that I have used on many other pages, and they are no longer working. One script was for a sticky header which is pretty straight forward, but for some reason won’t work anymore. The second is for connecting a Lead Source tracker from a form to Infusionsoft; also no longer working even though I have several pages that I have connected in the same exact way. The last script, is a countdown clock that won’t work now either. I have no idea why all of a sudden none of these will work when creating new pages. My previous created pages still work thankfully. Please help.