I was trying to figure out why my Twitter Cards weren’t working when I was tinkering with someone else’s WordPress install.
Turns out at some point Twitter decided to follow the WP.me redirect and grab the page behind is differently.
So, now you need to whitelist your domain rather than WP.me.
To do that pop along to The Card Validator with one of your none WP.me Blog Post URL’s in hand and pop it in the validator box.
Click request approval, fill in the little form and wack submit! It might throw an error but retest your page and all should be good!
Give it a few minutes:
A working Tweet!
Updated like so: