Validated cards not showing after several days working

[chimeno]

For the first week cards were showing correctly but suddenly they not appear in tweets anymore.
Example: https://twitter.com/VillaisBySara/status/451402508557373440
It is validated: http://i.imgur.com/IQjSTdB.png
This tweet card is working: https://twitter.com/VillaisBySara/status/448761740105633792 and also validated.

More details:
I can access to Twitter Analytics with that account but when I go to “Cards”, this message came up:

Thanks.

[romainhuet]

I just tried the Tweet you mentioned, Chimeno, and your Gallery Card works great on my side for https://twitter.com/VillaisBySara/status/448761740105633792.

It may have been a caching issue shortly after getting your domain enabled? Please let us know if you need any further help.