Why did my grids suddenly all disappear at every breakpoint? Is this something that I did with a single click that I’m unaware of?
If the largest breakpoint had the grid deleted, it will cascade down to the other breakpoints. You can check the site history to revert back if the grid was actually deleted.
What changes did you make, if any, to the site? If you think it may be an issue, might recommend contacting our team. https://support.wix.com/en/article/editor-x-contacting-customer-care-for-support