The AdMob banner in test mode loads the test ad but after using the actual unit id, it shows white space. I checked my AdMob account and it shows zero requests and zero impressions. I am loading the banner when Web_Viewer_1 (webpage) page loaded because the banner ad does not load on the screen initialization. Interestingly my other app shows banner ad without any issue with the same code blocks.
Please if anyone has the same problem or solution then share with me.