This issue seems to be back, the feed URL is throwing a 429 error:
I’m guessing that may be out of your control if other feed parsers are causing too many requests?
Quick edit: found this code on the home page, which seems to be a different feed URL:
<link rel="alternate" type="application/rss+xml" title="Breaking News - Headlines & Top Stories | The Star" href="http://www.thestar.com/search/?f=rss&t=article&l=50&s=start_time&sd=desc&k%5B%5D=%23topstory"/>