Cannot get updates on the guitars101 news feed

Up until yesterday, I have been getting daily updates from the guitars101 news feed .
I verified with their administrator that I am using the correct rss link:
The last updates to read are from October 31 (so no new files in 7 days). They said it has to be a news reader problem. I do notice that there is now an orange exclamation point next to it on my list of sites. Can you please fix this for me?

Robbie White

Looks like the publisher has blocked NewsBlur from fetching the feed (error 403 Forbidden). You might want to reach out to them and let them know. NewsBlur tries to fetch it every 15-20 minutes, which shouldn’t be considered too heavy of a burden on their servers.