Provide us with WP Dashboard access to your site to check the issue with the wishlist.
To remove the promo popup go to Theme Options > Header builder > remove the Newsletter element from the top header connection block https://prnt.sc/10ca47l
Here you can watch video tutorials on how to edit header using header builder https://www.youtube.com/playlist?list=PLMqMSqDgPNmDu3kYqh-SAsfUqutW3ohlG
