Login Problem, wp-admin/admin-ajax.php returns 0

#1

I was first having the issue 503: Service Temporarily Unavailable, Too many IPs which is discussed in this thread on the old forum . I changed the Unique IP Access Restrictions setting to unlimited, saved and cleared my server cache.

I still have the same symptom I had before - users cannot login and I just get a an endless spinner trying to log in. I was getting the 503 too many IPs in postman and changing that setting did change the wp response to be 200 but the response body is simply 0 (zero) and my users still cannot log in.

I’m using https throughout, and yes a subdomain but all consistently.

Are there more settings I need to check? Is there an Ajax logins bugger off setting? Any help is welcome, please!

Thanks!

#2

Have you cleared your browser cache, or tried a different browser?

#3

I did try different devices. The zero response kinda looks like the login isn’t being handled properly - perhaps not using the proper WP nonces and such?

#4

Well, s2Member doesn’t actually handle logins. It just leaves that to WordPress itself so, if it really is a nonce issue, then there’s something fundamentally awry on your site.

I think it’s more likely that you have a plugin conflict, especially if you have a so-called security plugin. Alternatively, if something like Varnish is running at the server level, that will also cause problems.

#5

Im not running a security plugin and my host is thinking its an s2 issue. Im running Gravity Forms with No-Conflict Mode on.

I was getting the famous 503 error for non-admins and as soon as I changed the mentioned Unique IP Access Restrictions from 5 to unlimited, this changed immediately to just returning 0 for admins and non-admins alike.

s2settings2-sm.png1024×4362 634 KB

#6

I have also tried
add_filter(‘ws_plugin__s2member_disable_all_ip_restrictions’, ‘__return_true’);

that I read about in the old forum to my functions but this made no effect.

Here is what postman says

s2-login-test.png3024×1692 103 KB

#7

One thing that comes up again and again in my researching this is the s2 login redirect. This could perhaps explain why the ajax login is not working properly. I see no way of turning off this s2 feature though I would think that there is a way. Can anyone help me with disabling the login redirection? Should I start a new thread with this title?
Thanks

#8

Have you tried the solution at the bottom of this thread: https://github.com/websharks/s2member/issues/997?

#9

Thanks for the tip. I uploaded that mu plugin to /wp-content/mu-plugins/s2-hacks.php but I do still get the 0 response.
I have also tried remove_action('init', 'c_ws_plugin__s2member_login_redirects_r::remove_login_redirect_filters', 11);

Is there anything I need to do for the mu other than upload it?

#10

No, uploading it is all that’s required.

I think you need to try this on a clean installation and see if it works there.

#11

Thank you Tim K, this helped.