In case you have setup your wordpress feed to redirect to Feedburner url for regular user-agents, you can use either curl or wget (Mac or Linux) to fetch your feed as FeedBurber user-agent. This may be useful for debugging purpose.
Fetch feed as user agent FeedBurner using curl
$ curl -A "FeedBurner" https://infoheap.com/feed/
Fetch feed as user agent FeedBurner using wget
$ wget -U "FeedBurner" https://infoheap.com/feed/ -O -
Option -O - will cause the output to be printed on stdout.
