Hello,
Apologies for the Delays. Consider trying the code below:
[ch_pre]<!-- Primary Navigation
============================================= -->
<nav class="primary-menu">
<ul class="menu-container">
... Stndard Menu
<div class="menu-container mobile-primary-menu pt-4 pb-5">
<div class="portfolio row gx-3 gy-4">
<!-- Portfolio Item: Start -->
<article class="portfolio-item col-sm-6 col-12 pf-media pf-icons">
<!-- Grid Inner: Start -->
<div class="grid-inner">
<!-- Image: Start -->
<div class="portfolio-image">
[

](portfolio-single.html)
<!-- Overlay: Start -->
<div class="bg-overlay">
<div class="bg-overlay-content dark" data-hover-animate="fadeIn">
[](images/portfolio/full/1.jpg)
[](portfolio-single.html)
</div>
<div class="bg-overlay-bg dark" data-hover-animate="fadeIn"></div>
</div>
<!-- Overlay: End -->
</div>
<!-- Image: End -->
<!-- Decription: Start -->
<div class="portfolio-desc">
<h3>[Open Imagination](portfolio-single.html)</h3>
<span>[Media](#), [Icons](#)</span>
</div>
<!-- Description: End -->
</div>
<!-- Grid Inner: End -->
</article>
<!-- Portfolio Item: End -->
<article class="portfolio-item col-sm-6 col-12 pf-illustrations">
<div class="grid-inner">
<div class="portfolio-image">
[

](portfolio-single.html)
<div class="bg-overlay">
<div class="bg-overlay-content dark" data-hover-animate="fadeIn">
[](images/portfolio/full/2.jpg)
[](portfolio-single.html)
</div>
<div class="bg-overlay-bg dark" data-hover-animate="fadeIn"></div>
</div>
</div>
<div class="portfolio-desc">
<h3>[Locked Steel Gate](portfolio-single.html)</h3>
<span>[Illustrations](#)</span>
</div>
</div>
</article>
<article class="portfolio-item col-sm-6 col-12 pf-graphics pf-uielements">
<div class="grid-inner">
<div class="portfolio-image">
[

](#)
<div class="bg-overlay">
<div class="bg-overlay-content dark" data-hover-animate="fadeIn">
[](https://vimeo.com/89396394)
[](portfolio-single.html)
</div>
<div class="bg-overlay-bg dark" data-hover-animate="fadeIn"></div>
</div>
</div>
<div class="portfolio-desc">
<h3>[Mac Sunglasses](portfolio-single-video.html)</h3>
<span>[Graphics](#), [UI Elements](#)</span>
</div>
</div>
</article>
<article class="portfolio-item col-sm-6 col-12 pf-uielements pf-media">
<div class="grid-inner">
<div class="portfolio-image">
[

](portfolio-single.html)
<div class="bg-overlay">
<div class="bg-overlay-content dark" data-hover-animate="fadeIn">
[](images/portfolio/full/5.jpg)
[](portfolio-single.html)
</div>
<div class="bg-overlay-bg dark" data-hover-animate="fadeIn"></div>
</div>
</div>
<div class="portfolio-desc">
<h3>[Console Activity](portfolio-single.html)</h3>
<span>[UI Elements](#), [Media](#)</span>
</div>
</div>
</article>
</div>
</div>
</nav><!-- #primary-menu end -->[/ch_pre]
This should work fine and display anything inside the .mobile-primary-menu DIV. Like a Portfolio or an Image Grid, anything but preferably not JS related and something simple and quick to be displayed. Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.