SPHARM-PDM not available in Slicer Extensions

Operating System: Windows 10
Slicer Distribution: 4.11.0-2019-05-01 r28202

The slicer extension manager is not displaying the SPHARM-PDM extension anymore. In addition, the appsite http://slicer.kitware.com/midas3/slicerappstore is not loading for me.