A monitor that goes quiet usually reflects the source, not the app: publications publish unevenly, and weekend gaps in weekday-weighted titles are normal. Each publication page on this site lists typical cadence so you can tell silence from failure.
If a specific source has genuinely stopped, check its page here for verification status. Publishers move and retire feeds without notice; the quarterly verification pass exists to catch exactly this, and the in-app directory updates when it does.
Still stuck? Back to the help centre or use the contact route there.