Does Happy Checkout Support Vimeo?
Absolutely! Just make sure that the video width is 350px.
Grab your Vimeo embed code by clicking the "Share" button on the video and selecting copying the code in the "Embed" section.
Copy that entire code, and add it to the Happy Checkout General > Custom Message setting in the same way that the form was added in this tutorial. You can also get in touch with us if you run into issues.