Example page: http://zumero.com/howto/zss-start/
This was rejected yesterday due to a too-small preview image. After fixing that, it was rejected again today with no explanation. In both cases, the validator appears happy.
Hi Zumero, Thanks for reaching out. We experienced the same sizing issues while testing your latest submission. Please feel free to respond to the original ticket we sent you on 3/19 (00798603) or create a new one at https://support.twitter.com/forms/platform to discuss in more detail. -Aaron
