I finally found the solution!
Turns out that SS was not resizing the stores font for the mobile site accordingly. A simple CSS for mobile font size solved the issue.
Hopefully I can now return the rest of the site to a more "normal" font size.
This is what worked for me.
/* CSS FOR MOBILE */
@media only screen and (max-width: 767px) {
.grid-item .grid-title {
font-size: 1.5rem;
}
.grid-item .product-price {
font-size: 1.5rem;
}
}