I've had this before, it's because the background images are behind the overlay layer so aren't directly selectable. Try adding "pointer-events: none" to the image overlay layer and see if that sorts it 馃憤
It's been a hot minute since I've added anything here, here's a recent one we've been lucky enough to work on. Last week we launched a website for one of the largest JCB dealerships in the world. Built in webflow with relume, as always 馃https://www.holtjcb.co.uk/
If it helps, I use blocks and copying from the relume site uses the spacers. Importing from the site builder tool defaults everything back to wrapper strategy so I assume the app import is similar 馃憤