Twitter App Card fails to preview - Invalid Value

[WAMapp]

We have been trying to set up a twitter card for our app for two weeks now and haven’t yet been able. This is the sample embed code I get.

But it keeps saying invalid value for both my iTunes ID and my Google Play ID. Are the problems with the twitter app cards still happening?

[ilunatech]

What are the urls for your apps (in Google Play store & Itunes app store)

[WAMapp]

itunes --> https://itunes.apple.com/us/app/world-around-me/id689722509
Google Play -> https://play.google.com/store/apps/details?id=app.WTInfoTech.WorldAroundMeLite

This is really urgent! Hope you could help us soon.