If you want your form to redirect to another website or back to the form after submission with a countdown timer, here’s how:
1. Open your favorite text editor such as Notepad.
2. Paste the following code and modify the values to your preferences (text in red).
You can also get the code here: https://pastebin.com/raw/UWBPhz3m
3. Save it as an HTML file, e.g. thankyou.html, and upload it to your server.
4. Get the link of the HTML file and set it as your form’s Thank You Page.
Go to Settings > Thank You Page > Redirect to an external link after submission then enter the link.