Generally, if you have missing media, it is most likely because you downloaded the deck recently and the media has not yet fully synced. You need to check if the media download status shows as idle or if it is still downloading. In this link, you can find more information about missing media: Why is my deck missing images?
If your media download status shows as idle, the tutorial above also suggests that you try resetting local changes. This generally resolves the missing media issue: How to Reset Local Changes
For First Aid and B&B content, you will need a separate subscription to those resources. You can learn more about how this integration works here: McGraw Hill Integration FAQ