Do you have the Placeholder IDs? You can log in to your Ezoic dashboard and go to Ezoic Ads -> Ad Positions -> Placeholders for an overview of all your placeholders. In that same section, you can also go to Generated Placeholders -> WordPress Plugin to view automated WP placeholders and edit settings, including Size Criteria / Device options such as Desktop / Tablet / Mobile.
Are there specific sections of a page where you don't want ads to be displayed at all? You can use Exclusion filters in your dashboard and WP plugin.
https://support.ezoic.com/kb/article/how-to-create-exclusion-filters-for-placeholders
For example, that recent posts section would match the following:
id="et-recent-posts-2"
class="et_pb_widget widget_et_recent_entries"