You can follow my answer below
1) My way below will help you to change the size of the footer mobile
+ Open templates/ja_medicare/css/custom.css file (create new if it does not exist) and add new rule
@media (max-width: 767px) {
.t3-footnav .t3-module .module-title {
font-size: 15px;
}
.t3-footnav .t3-module ul > li > a {
font-size: 13px;
}
}
Change the font-size to the value which suits your need
2) JA Medicare uses many template styles, you need to check it from template manager and make sure that the page you’re viewing is assigned with template style that includes footer already
For example: Go to Admin site -> Template Manager -> ja_medicare – Default -> Layout -> Responsive Layout -> Extra Small and enable footer-1, footer-2, footer-3 and footer-4