What features would have my canvas app to submit application on App Center? Facebook give me this response:
Ineligible Submission Your app does not have high enough ratings and user engagement to be eligible for the App Center at this time.
What could I do to enhance my rating and user engagement?
On
Some advice from a facebook guy, not me ...
There are no numbers because it is not as simple as you need more than 1000 users and a rating higher than 4. We weigh both user engagement and ratings together with other stuff to try to figure out what a high quality app is.
There are several other ways your can get visibility. Publish Open Graph stories and using Requests are 2 things you can do.
I agree, its not a very helpfull message from facebook, how to get high ratings how much user engagement, they don't tell you this information before you start to write an app!