Layout is broken, cut off or overlapping
The short answer
Layout problems come from your site’s CSS interacting with the widget. Some are fixable in the settings, some need custom CSS, and some need a developer to look at the actual page.
The most common four: the widget is cut off, it overlaps other elements, extra space appears around it, or it looks wrong only on mobile.
What you can fix yourself
Cut off — the container has a fixed height. Set it to auto. On Wix, the embed element needs dragging taller, because Wix embeds do not scroll.
Extra space — usually padding on the container rather than on the widget. Check the section, not the embed.
Wrong on mobile only — check the layout’s mobile settings; several layouts have separate column and row counts for mobile.
Overlapping and z-index
When the widget sits over or under something it should not, that is a stacking context conflict with your theme. It is fixable with CSS but the fix depends on your page, which is why this one usually needs someone to look at it.
What to send support
A direct link to the page with the widget on it. Not a screenshot — the CSS is the problem and it cannot be read from an image. If you would rather not have it on a live page while it is broken, put it on a test page and send that link.