Looks like Twitter is now hiding impressions, making it impossible to know how Twitter is throttling your account and preventing your followers from seeing your tweets. 
Engagements are still listed. Reminds me of a dishonest talking point Twitter reps gave me last year: "what if your tweets aren't getting a response because they're not that good?"
Now they'll be throttling the display of your tweets to your followers (who have opted-in!), and insulting you when you bring it up or complain to them about it. Miserable, miserable company.
They'll say, "oh it got a reasonable number of impressions based on your follower count; people just didn't want to engage with it, that's all."
And you've got no counter-argument.
And you've got no counter-argument.
Unsurprising.
