Planescape box set art not loading

The art for the three Planescape books appears to have stopped loading in properly. I checked on a couple of different devices, and checked other books as well, and it seems to be confined to just this set of books--though I haven't done an exhaustive check. (These happen to be the ones I'm running right now.)

I'm also having this problem. Switched browsers as well but to no avail.

This is happening to me as well. Requests for pretty much all the images outside of monster stat blocks are returning 403.

I had same problem, requested help from dnd staff.  here was their answer, and my art is back.

Thank you for following up with us. We have manually applied a fix to your account's entitlements and this should allow you to access your content.  The process can take a few minutes to finish, but after that time, please check again to see if you have access to the content you were having issues with.

For future reference, you are able to sync your entitlements manually by navigating to the Licenses tab of your profile. Here you will see a message about your Account Entitlements. If they are not in sync, please click the button "Sync My Entitlements". 

I’ll be glad to help you further if you have any other questions or concerns!

Seems to be working for me now.