The only setting that works on mobile is to keep the Columns on Auto. This will enable 1 column on mobile. But it eliminates the ability to control the numbers of columns on desktop. If you select one of the options for number of columns then mobile displays all the columns and messes up the page with horizontal scrolling.
There needs to be a mobile column and row settings separate from desktop
Folks, our former Wishlist portal, where our users shared their requests and suggestions, was transferred to this forum. You’re most welcome to vote, add new ideas, and leave your comments here — we surely will consider them all! 
Original Votes: 3
Hi Robert,
Thanks a lot for adding your idea!
I do understand your point, and I hope we will be able to split the option to control the columns on different devices soon.
Thank you so much for helping us!
Original comment from Robert Dickey transferred from the previous Wishlist portal:
Guys, I’m happy to say that mobile column settings are now available in the All-in-one-reviews widget!
You will find them in your widget’s Layout tab → Customize:
