To edit the newsletter popup, navigate to the Toolbar > Edit with Elementor > Newsletter Popup 

   

    

   

  

Or go to Dashboard > Templates > Popups

Locate the "Newsletter Popup" and click on Edit with Elementor:

  



  

  

Please check these guides for further information:

Guide to Vamtam Elementor Builder

Popup Elementor

  

  

Next, click on the "Save options" icon and select "Display conditions":




Here, you can remove the popup from the homepage or add it to whichever post or page:



Please check this tutorial for more details: Display conditions Elementor