Your card design will save automatically each time you make a change, or when you close the Customize page. Every time you make a change from our desktop site, you will see "Saving" and then "Saved changes" in the upper right corner of your page:
We recommend having your card open in only one tab or browser window at a time to prevent an older version of your card from saving over a newer version.
If your card says "Saving" but your updates don't save, please contact us.