Go to Admin > Store > Configuration > WeltPixel > Newsletter
Enable Newsletter [All Pages / Just Home Page] - enable newsletter module
Display Mode [Yes / No] - If this option is set to Just Home Page - the popup will show up only on homepage after meeting the visibility conditions setup in the options below. If this option is set to ‘All pages’ - the popup will shop up on any page type once the visibility conditions are met.
Display on mobile [Yes / No] - If this option is set to No, newsletter will only show up on desktop devices.