Unfortunately, the "good" answer to this question is that you can't just add any tags <p> or <br> around the logo section and expect it to work. The entire Imagevue X3 page is built on very
advanced html- and CSS, and the logo is for example set to absolute positioning and scales in media queries so it looks different on smaller screens.
This option is for web designers who know what they are doing and for example want to add some custom item in the header section and style it with their own CSS.
Did you read the docs for the logo setting?
https://www.photo.gallery/x3docs/settings/logo/
If you want to change
padding or
margin around the logo, look at padding- and margin tags in the documentation link above. If you really want to customize the logo with styles that are not available in the "Logo Utility Classes", then you should be adding that through the custom css page instead. To be honest, I think I might remove the "custom logo" section, because you can already style the logo through the main
logo setting, and custom css for advanced styling ...
You can't just format it with plain html tags, and the logo will break unless added correctly ...