Ezoic should not impact upon search ranking other than having a positive effect upon traffic in the long term by improving user experience and extending user sessions on your site. Whilst publishers maintain responsibility for their traffic, our award winning SEO expert Tyler has created some brilliant resources to help you with this task!
Here's a few of my favourites that our publishers are finding very useful:
https://blog.ezoic.com/dont-delete-old-articles-on-your-website/
https://www.ezoic.com/diagnose-google-rankings-drops/
Here are some other tips you can try:
You can look at what changes you've made to your site in the last 30 days e.g are you using any new plugins?
We recommend segmenting your traffic on SEMrush by organic versus paid and looking at whether the trend differs for different traffic sources
If organic traffic is steady it is unlikely that an algorithm update is at the root of the drop
Use Search Console: have you submitted a Sitemap? Does the site need re-crawling?
Is the variation seasonal? - What happened at this time last year?
Review traffic by device
Review HREf lang tags
Review traffic by landing page to check for particular pages that have been hit. You can do this in Big Data Analytics under Content > Landing pages:
Big Data Analytics - How It Works: https://support.ezoic.com/kb/article/big-data-analytics-how-it-works
You can also connect your Search Console to Big Data Analytics through your Ezoic dashboard to assess if your keyword ranking has gone down.
We also have a new tool that allows you to test different title tags and identify which most engages your users to improve your traffic:
https://support.ezoic.com/kb/article/getting-started-with-tag-testing
If you are a Premium publisher you can book a review with one of our Success Managers on the topic of SEO.