A lot of people have been following this link so I should point out that further in that Cloudflare post it is noted that the above solution works because it basically disables the OWASP firewall rules altogether. Not exactly ideal. The alternative suggestion there is to:
Edit the scope to âCustomer Filter Expressionâ and make it âWhen incoming requests matchâ
URI Path â does not contain â /wp-admin/admin-ajax.php
Not perfect, but probably better. I hope that helps future Bricks + Cloudflare users.