Global Site Tags

Hi, I have installed the two files into my MU-Plugins directory and I already had Post-indexer installed. I added the widget to my page and it says "There are no tags to display." I have plenty of tags – when I add the wordpress tag widget to the page it shows them all. How come it is not working? When I go and look at my pages it says "Tags » " how come it has the » ? I tried editing the page just so it says Tags and it still doesn’t work it still shows up as "Tags » " but my url is Can you please help.