Subdomain Case Sensitivity

Within Squarespace, I have established a subdomain to forward to an external website for my podcast with host name "listen." So, as far as I understand, listen.website.com and website.com/listen should take you to the external site. Which it does. My problem is I would also like LISTEN (all caps) to take you to the same place, and establishing a similar subdomain for host LISTEN does not seem to do the job -- i.e. it takes you to 404 page not found.

How do I cover all my case-sensitive bases for my subdomain?

website.com/listen and website.com/LISTEN and website.com/Listen should all take people to the same place.

Thanks for any info! 

3 hours ago, bkeithley said:

website.com/listen and website.com/LISTEN and website.com/Listen should all take people to the same place.

It's difficult to troubleshoot a specific issue without the real details. That said, I can tell you that the URL slug (the part after the domain name) is always case sensitive and, on Squarespace, you can only have lowercase slugs.

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@paul2009 Is there any way to make the url redirects case insensitive through squarespace features?

I'm currently using this code in the header:

<script>
var lowercasePath = window.location.pathname.toLowerCase();
if (window.location.pathname !== lowercasePath) {
  window.location.replace(window.location.protocol + "//" + window.location.host + lowercasePath + window.location.search);
}
</script>

But now the problem is my redirect links are randomly disappearing or are not added correctly.