Rendering Problems - Can't manage certificates/identifiers in apple developer center

Rendering Problems - Can't manage certificates/identifiers in apple
developer center

since a couple of days I can't manage my certificates/identifiers/.. in
the developer center. Steps to reproduce: 1. Log on to developer.apple.com
2. navigate to "Member Center" 3. click on "Manage your certificates, App
IDs, devices, and provisioning profiles"
screenshot of my browser showing "manage your certificates.."
https://discussions.apple.com/servlet/JiveServlet/showImage/2-22930732-294327/appleDevCenterIdentifiersRenderingError.jpg
This appreas in different browsers: Latest Safari, Chrome, Firefox.
I am not behind an proxy server which might block some content. Any idea
what I can do?
Thanks