Hi @misplon,
I actually had to revert back to the previous version (2.2.3) in order for the panels to appear as they do now. I wanted to launch the page today, hence me reverting to the previous version of Vantage. It was the update to 2.4.2 that was causing the panel rows not to appear at full width.
I still can’t actually get to the “customize” page though.
It brings me to this page url: https://www.missmookie.com/wp-admin/customize.php?return=%2Fwp-admin%2Fupdate-core.php
(ovbiously you can’t access that, but I included it, in case the url gives a hint)
It simply goes to white page i.e. doesn’t load.
When I get a chance I’ll update again and try the code you suggested.
Thank you!