My company has a lot of apps. I’ve managed to get twitter cards working for most of these, but some fail the validator (red dot), but do not report any other errors. The thing I find in common among the apps that fail is that they don’t have enough ratings in the App Store yet.
This theory is bolstered by the validator’s sample, which says:
{{star_rating}}/5.0 stars - {{num_ratings}} ratings
As though some piece of code that was supposed to do a substitution did not run.
Here is an example that passes validation: http://m.kaon.com/c/ka
And here is an example of one that fails: http://m.kaon.com/c/le
Is my diagnosis correct? Is this a known problem? Is there a workaround?