After reading this great answer from iconoclast here I was able to scrape a website that contained an iframe by simply getting the iframe URL within the code.
The website has been updated and the iframe URL now gets redirected to the initial "wrapper website" upon loading. So there's no way to load the actual content of the iframe in plain HTML.
<script type="text/javascript">
if(window.location == window.parent.location)
{window.location.replace("https://www.[WEBSITE].ch/portal");}
</script>
Is there any way to fix it and scrape the website?