I can't decide if the feed is the issue or if there is an issue with Vienna
https://thepointsguy.com/feed/
It worked fine till a few weeks ago, but now if I refresh it - I get no updates even through their site has new articles. I've deleted it and re-added it and the first refresh pulls articles, but after it doesn't.
This is what I see when I look at the activity on it via Vienna
Connecting to https://thepointsguy.com/feed/
Got HTTP status 304 - No news from last check
Help?