Thanks for clarifying. varnish cache isn't compatible with Ezoic, so might be what's causing issues here. Would you be able to disable it fully?
WP Rocket caching should be find, as long as you leave their full page HTML caching off, as that will stop Ezoic from functioning properly as well. I would generally recommend keeping our plugin installed, it shouldn't clash with WP rocket, it'll just allow us to use things like automated caching on the Ezoic end.