Problem with Cloudflare caching and delivering the right currency

I have cloudflare entreprise for best performance, i want to use Json instead of Ajax. when i am conntecting with VPN — the cache is delivering the wrong currency. can you please help ?
Maybe i have set it up wrong ?
i have WP rocket – and have excluded:
/woo-multi-currency/
/woo-multi-currency-switcher/
/woo-multi-currency-cart/
/woo-multi-currency-load-by-ajax/

the problem looks like its really coming from cloudflare.