Loaded the new system. RSS Feeds in mail are gone

all my RSS feeds are gone in mail and I cannot add any. Comes back with a message that there is no application. Any ideas?

Thanks,

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El

Gear. 2 Omd, all the lenses, Ep3, Ep2, Ep1 infrared, Fuji X100, Fuji x pro 1, all the Fuji lenses, Voigtlander 15,21,28,50,75,90,180. Nikon 55 macro, 200 macro and Zeiss 100mm macro, Induro Tripods and heads, etc.