Podpress dilemma

This is the message I’m receiving when I try to validate my itunes feed.

Sorry

This feed does not validate.

*

Server returned HTTP Error 404: [help]

In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendation.

*

line 46, column 26: Image title doesn’t match channel title [help]

works just fine, but There is no connection to my itunes podcast. I don’t know when it stopped working, but nothing is uploading to itunes anymore. don’t know what to do.