Karen, I hope you don't mind, I edited your subject line and am adding to it here because I think your issue and more that I discovered might be related.
The website you linked to above is a Wordpress site where (I think) Paul's podcasts are hosted. About a year ago, there were some errors with that page (as ever so briefly identified and discussed and then fixed in this
Podcast error thread).
I've noticed that there seem to be multiple podcast "channels" that show up for Paul, and they no longer show the icon/picture, or otherwise error out in my podcast
feed. So I'm thinking wherever / however the podcast are listed might need some updating.
I use the free Podkicker app on my phone and my tablet and I took some screenshots from my phone to show what I mean.