RSS PROBLEM

More or less the same problem here. RSS feeds just won′t be displayed. Not even from my own site. Can anybody help and explain to a newby how to display my feeds in my blog?

I tried some more and i found that some feeds are displayed like https://rss.news.yahoo.com/rss/topstories but some are not https://rss.news.yahoo.com/rss/oddlyenough. The feeds are from the same site soooo…. there must be something wrong with the rss reader.

I need help… when a active the “permalinks” plugin, i receive this message when i try to suscribe myself in my rss,,

Error de lectura XML: la instrucción de proceso XML no se encuentra al comienzo de una entidad externa
Ubicación: https://innovacion7x24.com/blog/feed/
Número de línea 3, columna 1:<?xml version=”1.0″ encoding=”UTF-8″?>