link to a CTA button

Hi – love this plugin. I have successfully activated the popup after 15 secs and if users go to leave the page.

Only one issue. I cannot figure out how to link the popup signup form to a large CTA (Call To Action) button in the main body of my site. This seems like it would be a pretty common need in 2023 but I cannot find any reference to it in the MailPoet documentation. Is it there and I just missed it?

II’m using Twenty Twenty-Three (Site Editor) and I have the Code Snippets plugin installed. Can I use that to “activate” my button. If yes, please explain. Any advice much appreciated.

The page I need help with: [log in to see the link]