We are testing WP APO on multiple sites and we have mixed results (more positive than negative).
We use CartFlows on a site and its anonymous checkout doesn’t work only when APO is enabled.
The console shows 403 errors with one towards /wp-admin/admin-ajax.php
See image (hopefully it’s zoomable):
It was unclear when we tried, but can we disable CloudFlare for requests originating from specific URLs? We would whitelist that checkout and let it behave the same as if CF APO was disabled.
If any extra info would help, let me know what! We wanna learn to master that APO and spread it like butter on gluten-free bread.