Please do not tag individual staff members on posts - we all have different skill sets and schedules and this is a community support forum, not a direct support channel.
Your page will not work as the cards crawler requires a fully-qualified DNS domain to fetch the page. You will also need to ensure that the server responds in a timely manner to requests from the Twitterbot user-agent.
Separately, you also need to fix the empty twitter:description tag in your pre-rendered page, as this is invalid.
