If you are getting an "Access Denied" error message when trying to use Adobe Spark, your best option is to force a login and logout, and then log in again.
- Go to http://www.adobe.com/products/
- Select Logout from the toolbar at the top of the screen
- Click on “Sign in”, you'll see your last logged in Adobe ID
- Click on the ID type (personal or enterprise) and log in again.