I have the issue on masonry grid. It’s certainly the same with any visual element using text.
Didn’t see any option to use custom font, even to choose whatever font. Even if I go in element / template customisation. Further, it may demand to load all alphabets, Roboto & Montserrat.
You can have a look on staging site below, home page. https://snipboard.io/KRvhom.jpg https://snipboard.io/DojvLO.jpg
You are using the Post Masonry grid element by WP bakery page builder. WoodMart does no influence the functionality of this element. Please use WoodMart elements and let us know if you have any problems. https://gyazo.com/d136abe5cf507a917b8c4d3f5ad88632
Issue is that your portfolio element is not suitable for mobile … not enablig 2 columns … just 1 column, like needed for the generation of the iphone 3 or 4.
The ergonony on mobile is the big weakness of woodmart.
I made a fake page for you on staging. Namely, it’s a lighter home, because wpbakery is a true nightmare for cpu, it can break the site for a few minutes. For your info, I also have very heavy / complicated pages made with Gutenberg, when I change them, the cpu remains super cool !
Back to topic: on the page below, this is how I tried.
First, your portfolio element set to 3 columns, visible only on desktops / tablets
Second, portfolio set to 2 columns, visible only on mobile, but over-ruled somewhere to deliver 1 column.