Additional data (may or may not help):
I just noticed my Newsblur site for Wirecutter Deals is a Twitter site. And that keeps updating. So, it isn’t a Twitter-wide issue.
But, here is another Twitter page . In the Newsblur site, it shows “1 subscriber” so I might be the only person following this Twitter page in Newsblur. The Twitter page shows many frequent updates. But the Newsblur site Statistics & History says:
Last Update: 1 hour ago
Every: 2 to 2.5 hours
Next Update: in 1 hour
Stories in Archive: 220
But, also, the only FEED FETCH at the bottom left is:
2022-12-16 12:37:53 OK (200)
And the only data I see on the Newsblur site and iOS app is a handful of posts from 2022-12-15 and 2022-12-16.