Ads not showing in Mobile devices

I’ve used the Chitika ads plugin for my site – https://www.naadanchords.com . I’ve placed an ad block in the sidebar and on top of each post (individual post page). The ads are working perfectly in desktops.. but are not appearing in mobile devices. I tested it on an iPhone, an iPad and an Android mobile.

I checked my Chitika dashboard.. mobile ads are enabled

Could anyone please help me out? ??

https://www.ads-software.com/plugins/chitika-premium/