I think PHLX meant to say that some are having problems while others are not.
Simply, depending upon how the data provider is doing business with PHLX...
Some data providers are not affected while others are.
From what I can tell so far...looks like the lower end data providers aren't getting the data while the higher end data providers are getting the data.
PHLX indices are very useful for us Emini or Eurex Futures traders because some of their indices are excellent giving early hints to the market direction via using them as market breadth.