Hi, i installed the plugin and put the information of the pop up but it is not appearing. Do you have some manual or instructions to make it work?

Hi,
Sorry, you won’t be able to see the website as it is under construction.
I’m on WordPress 5.8.3 using the Draftly theme.
I had no problem creating the subsciption form and it previews fine.
I add it to the sidebar without issue, but then in previewing the site, the form does not show.
If, instead of selecting the form, I use the shortcode, I get an invalid JSON response. I don’t have any other issues with this known JSON bug at this time.
Previous subscription form plugins tested were visible (so the site being in construction is not an issue), but I removed them for other reasons. There are no remnants in the code as I over-wrote my WP with the backups.
Thanks for your help ??

How do I select one of the 10 Pre Designed Subscription Form Templates to use in my WordPress website? I’m using the free version at this stage.