Some things to check: 1) you are not trying to drag in duplicates of existing creatures. The compendium will not overwrite an existing statblock (to preserve any customization), so if you already have created a goblin, dragging in a new goblin will only create an existing copy of one you already have. The solution here is to delete the existing copy from your journal tab and import fresh from the compendium tab. 2) Make sure you are using the D&D 5th Edition by Roll20 Sheet. The Shaped sheet will import some statblocks, but only the official sheet has full Compendium compatibility. 3) Try experimenting with a brand new campaign to track down some of the above issues. 4) The individual areas of character sheet statblocks are clickable. Roll20 does not create Token Action Buttons (the buttons at the top of the screen that appear when you select a token) by default. 5) Make sure you are dragging creatures in from their name in the Journal Tab or the Compendium tab. Some folks try dragging the token off the sheet. That doesn't work. 6) although this is not an issue with brand new creatures dragged in from the MM, it would be a good idea to become familiar with how tokens and sheets are linked. I would suggest carefully reading or watching the following links: Wiki article on Linking Tokens to Journals Here is a video which demoes the procedure