JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://uberall.com/assets/storeFinderWidget-v2.js" type="text/javascript"></script> 

<div
 id="store-finder-widget" 
 data-key="nONqc0welT1mqSQJFQJcot5cd8AG1x" 
 data-language="de" 
></div>

JavaScript

window.setInterval(function() {

    Array.from(document.getElementsByClassName('ubsf_details-email')).forEach(function(el) {

        var innerLink = el.querySelectorAll('a')[0];

        innerLink.text = 'Contact us';

    });

}, 500);