Dungeons & Dragons Online
System Requirements
Ingame store appearing blank
If the ingame store appears as a blank page or is missing elements there's a chance that the built-in browser's files got corrupted.
To fix the problem go to Dungeons & Dragons Online's directory and delete the 'browser' folder. Upon restarting the game the launcher will download the files again, solving the issue.
Developer's post about the solution on the official forums