Hi there
This is really strange; are you running a cache plugin?
Could you please share with me a link to your installation, so I can check the problem?
I don’t use cache plugins.
https://bit.ly/2QNAcvr
Hi there
I just checked your installation, and it seems that when you perform an AJAX call to your server as a guest customer, server redirects AJAX call to the homepage (check my screenshot for reference)
This appear to be happening for any AJAX call, and any action, including test ones, as you can check for yourself visiting (as a guest) the following url: https://differest.com/wp-admin/admin-ajax.php?action=test
What you should see is a white page with a single 0 (action doesn’t exist), but you get redirected to homepage
This is definitely a problem with your specific installation, and I suggest you to dobule check what could be causing that (plugins, or server configuration)