I might need more information to figure out exactly what the situation might be with your specific website, but a few reasons why your ads may not be showing yet include:
Your site has not be reviewed yet by our Platform Quality team
Your site is integrated, but not yet turned on with our proxy in the backend
Your ads.txt file is not set up correctly
You have not set up any ad placeholders yet
Your Ezoic traffic is turned off or too a low percentage
You have not set up our SSL app correctly (for name server or Cloudflare integrated sites)