If ads are not showing on your site, I encourage you to check out the following Support article https://support.ezoic.com/kb/article/why-arent-ads-showing-up-on-my-site as a checklist to make sure you’ve got everything set up properly.
Once you've gone through and implemented the potential solutions the article presents, if you are still not seeing any ads please feel free to reach out to the Support team. We would be happy to look into this with you!