To remove or add scripts go to scripts 3rd from the left on the home page and look for "My Collection" you'll be able to add and remove free scipts. On scripts you've paid for it'll say "purchased" and i'm not sure you can remove them. Next open your bot then after you click the play button, there should be a "Refresh" near the "Start" button on the scripts tab, this should refresh the tab and it'll show those changes.