Change Edge TTL (WP-APO w/ plugin) via Cache Rule

Hi there,

I’m having a similar problem to this thread (403s on admin-ajax (Nonce-related), when using load more buttons etc., after a while): https://community.cloudflare.com/t/403-on-wp-admin-ajax-nounce-apo/258029/7

As I’ve used all three page rules on the site already, I’m trying to change the Edge TTL to 8h via Cache rules.

So what I did is setting “Hostname”, “starts with” and “domain.com” (just a placeholder) with this expression:

(starts_with(http.host, “domain.com”)) - and additionally “Eligible for cache”, and Override origin Edge TTL to 8h. Does this suffice to address everything around my domain (including HTTP / HTTPS requests etc.)?

Thanks a bunch and best regards,
eC