Home page (only) editing is behaving as a mobile view on computer

When I add an element of 2 or 3 columns, BB adds them top-down, as they are individual rows and not columns. This changes the whole appearance of the page when I published it. Can anyone tell me how I messed it up? The only change I made to the site was to add titles to the images in the library.
https://theentertainerspr.com/

See screen shot. I expect those 3 elements would show side by side.

Update. I did get an email from WordPress saying “Some themes were automatically updated, Beaver Builder Theme (from version 1.7.10 to 1.7.18.1)”. Perhaps that’s what caused it.