Updated thank you page not showing the correct page?

I updated the thank you page on my Event registration form and i don't get the page when i register. 

I cloned your form and this is how it looks like in my end:

I see you are embedding a page on the "Thank You" settings. I believe it would be best to just redirect the user on a payment page setup on your website instead of embedding it on the thank you message. Here's a guide on how to redirect your users: https://www.jotform.com/help/38-Redirecting-Users-to-a-Different-Page 

If you want to add a payment integration on the form itself, you can check this guide: https://www.jotform.com/help/165-Setting-Up-Your-First-Order-Form. However, we do not have an integration with BluePay.com. You can check the list of payment integrations that we have in this guide link: https://www.jotform.com/help/323-Mastering-Payment-Form-Integrations-with-JotForm 

I hope that helps.