I noticed that you are currently inserting the header script code into the ad placement positions. Please note that this will not display banner ads, as the header script is only meant to load the AdSense library globally across your site.
The header script looks like this:
<script async src="
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-12345678" crossorigin="anonymous"></script>
To properly display ads, you need to use the AdSense ad unit code, which contains the <ins> container and the push({}) call. For example:
<div class="qlassy-ads-sidebar-top">
<ins class="adsbygoogle"
style="display:block"
data-ad-client="ca-pub-1234567890"
data-ad-slot="1234567890"
data-ad-format="auto"
data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
</div>
Make sure to replace data-ad-slot="1234567890" with your actual AdSense ad slot ID from your AdSense account.
Plugin Version
I also noticed that you are using the older v1.0 of the Qlassy Ads Manager plugin. Please update to the latest version (v1.4) as I have already released it here:
https://github.com/Souravpandev/Qlassy-Ads-Manager
You can also see a working demo of this plugin here:
https://violet-goshawk-761845.hostingersite.com/
Theme Compatibility
One more important point: this plugin not working correctly with your custom theme, try to update the plugin if this issue resolved. The reason is that your theme has modified the default Question2Answer (Q2A) layout structure. Since the plugin relies on Q2A’s standard layout hooks to detect ad placement locations, any changes made in a custom theme can break this detection.
Because of this, I cannot guarantee that the plugin will function properly with custom-designed themes. The plugin is optimized for Q2A’s default layout and standard theme structure, not for third-party or heavily customized themes.
If you want this to work with your current theme, you may need to contact the theme developer.