How to fix the 405 error when trying to submit a sign-up form
"Error 405: This page cannot support this request." is an error you'll see whenever you embed the same form more than once on a single page. To fix this, simply remove one of the scripts from your website's code, and it should work as expected.
If you need to add the same form twice, you can duplicate the form in your EmailOctopus account, so that its appearance is the same, but the two JavaScript snippets you add are different.
To duplicate a form, click on the dropdown menu on the far right and select Duplicate.
Then, navigate to the Content step and click </> Add to your website to get its unique script you can embed on your website.