Need Help to include custom js on customer portal

[rmf]

I am trying to show tidio chat bot on the customer portal.. Need help


I have made the following changes in master.tpl
<script src="//code.tidio.co/e2kx3fm4vlkhvq4dlwx75qdlovhqob2r.js" async type="text/javascript"></script>

ORIGINAL CODE
<header id="header">{{{header}}}</header>
<div id="content" class="container content">
<div id="main" tabindex="-1">{{{main}}}</div>
</div>
<footer id="footer">{{{footer}}}</footer>

MODIFIED CODE
<header id="header">{{{header}}}</header>
<div id="content" class="container content">
<div id="main" tabindex="-1">{{{main}}}</div>
</div>
<footer id="footer"><script src="//code.tidio.co/e2kx3fm4vlkhvq4dlwx75qdlovhqob2r.js" async type="text/javascript"></script>{{{footer}}}</footer>


The bot is still not visible on the customer portal . Need help

I am trying to achieve this on all pages of customer portal
(Demo screenshot attached)