FIX Blank Space On Ad Area | Using Hosted Account Ad To Blogger Blog. Video: Step 1 : Creating an Leadboard ad unit. Step 2 : Copy Synchronous Code. Step 3 : Add an HTML/JavaScript Gadget. Step 4 : Paste the copied Asynchronous code from Adsense. Step 5 : Remove "ca-pub-" from google_ad_client Delete the ad_slot line completely Step 6 : Save. Step 7 : Refresh your site.