Summary cards stopped working in May; validator continuously returns "unresolved address"

[AltairSound]

Summary cards stopped working on my site altairsound.com in May. The validator persistently returns “unresolved address”.

Sample url: http://altairsound.com/music/?p=1405

Validator: https://dev.twitter.com/docs/cards/validation/validator

[lin_amila_lala]

“unresolved address”

I have same problem.
Maybe I am not whitelist?

my test url : http://tools.lynnlin.dev5.test.kkcorp/twitter-card/summary.php