Hello @NickT023. Thanks for including the link. Although I wouldn't be able to assist with inserting the code into Constant Contact, I can give some suggestions based on the link that you provided. You have a great ratio of text-to-image. I see that you mention an early bird special for those who registered before a certain date. I would include that as part of the "Register Now" button to entice your contacts to not wait to sign up!
We have a specialized support team that works with custom code emails and is the best team to reach out to if you have any questions when inserting your code. Here is a link to their phone numbers and hours of operation.
... View more