Ad not showing but code looks exist

Hello

After checking different articles I found my code is added, but Ad is not showing its more than 5 days. Please suggest. How much time it will take and Is my code is correct.

view-source:https://www.blandmagazine.com/web-stories/marvel/

<script type="application/json">
				{
					"ad-attributes": {
						"type": "adsense",
						"data-ad-client": "pub-0796709302875980",
						"data-ad-slot": "3945603657"
					}
				}
			</script>
		</amp-story-auto-ads>

The page I need help with: [log in to see the link]