You may see:
ERROR: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress

Here’s the fix.

First, the free version of CF will not solve this problem. You’ll need to pay for the pro version – this is because there are several paths which you’ll need to exclude from the cache.

You’ll need to add rules to explicitly bypass the cache for:
*.example.com/wp-admin/*
*.example.com/wp-login.php*
*.example.com/*&preview=true
*.example.com/?geodir*
*.example.com/gd*

The order in which these rules are placed is also critically important. Please move these rules to the top of your rules list.

I hope this is helpful.

I’ve never had this problems with Cloudflare, normally disabling rocketloader is more than enough.

In any case thanks for letting us know, this could be helpful for other members too.

🙂

You may also want to add an exclusion for *.domain.com/add-listing/*

Hope it helps. I’ve also added a social media login and registration plugin by oneall.com which is working great.