Marketplace Purchase not available in game

I just bought a collection of maps from Dungeon Master's guild as an addon for an existing game in Roll20. But marketplace will only let me use it if I create a new game with it, there is no option to add it to an existing game. I have tried adding it from within the game itself, but it is not on my list of market place purchases. What am doing wrong? Can this be done? Thanks for any help :) 

It sounds like this is a Module.  If you believe that it is an addon, please post a link to the Marketplace item. If a marketplace purchase is a Module , then it can only be used to create a new game . If it is an Addon , then it can be added to any game that is already created on the Game Details page. If it is an Art Pack , then those assets will show up in every game that you create on the Art Library tab of the right sidebar. You don't have to add them to any game. If it is a Compendium , then those assets will be accessible through the Compendium tab of the right sidebar for any game that has a compatible character sheet selected. If it is a Module, since you have a Roll20 Pro subscription, you can create a game with that module then use the Transmogrifier to move those maps and pages over into your regular game.

Hi The Master,  Please provide the link to the product page in the Marketplace.