If you need support from Yola please contact us via support@yola.com or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
You may be able to create a link within your payment prompt text directly to the form link itself at Wufoo and that may open the form?. {I don't use Wufoo so I'm not familiar with their options. Sorry.}
If the form needs to be embedded before it can be seen, then I would do it slightly differently by placing the form on a hidden page and using the link on your payment prompt text to that page.
You may also be able to create it on a modal screen (like a light box) for a more dramatic effect. There are quite a few modal boxes available free for users to implement. Shawn Holman and Nathan are the people to ask regarding this. Shawn has a monthly code request in one of the threads here.