Hey there.
I’m using Ember.js to display a list of a few tweets based on the tweetID. I render each tweet using the twttr.widgets.createTweet function, passing it the tweetID.
This only works for about 10% of tweets. The others simply don’t render. I looked at the browser network logs and I am seeing a LOT of 404s. The function appears to be requesting at https://syndication.twitter.com/tweets.json?ids=X for each tweetID. But most of these requests are returning 404s.
I am POSITIVE that the tweetIDs are correct. Here are some examples of tweetIDs I am using that return 404 and do not render:
520656411278458900
518441900312109060
521647625834344450
Here for comparison is one that worked:
518504436067737600
FYI even the provided ‘example’ tweet in the documentation (found here: https://dev.twitter.com/web/javascript/creating-widgets) doesn’t work. This has tweetID: 28 and it returns a 404 as well.
So clearly there is something not right on twitter’s side here, if nothing else the documentation is wrong.
Look forward to hearing some input on this issue 
Best,
Sam