Hello Vladimir,

The error means the URL in your Recaptcha setting is not the same as your site now. Can you please check? Or you can provide us your backend, FTP and recaptcha access so we can have a better look here.

i update to latest easysocial version EasySocial v1.3.28
and now recaptha is empty
in https://www.google.com/recaptcha/admin
there is no more private keys...
only key and secret key
Now it is new No CAPTCHA reCAPTCHA )))
I think you need update recaptha app for easysocial

Hello Vladimir,

Thanks. We will update the words in our app there. The site key is your public key and the secret key is your private key. Have you get it working? I've tested in my local and it is working: http://screen.stackideas.com/2015-05-26_1041.png

i test and it works with eng domain, but it not working with my punycode russian domain

Hello Vladimir,

I am sorry for the delay of this reply.

Perhaps you can provide us with your Joomla backend and FTP access so we can check on the issue directly? Please advise.

i think it is google api problem....
see this
http://xn----7sbbbxobldi6b5anbe7c2j.xn--p1ai/vhod/registratsiya
google chrome works
but firefox not

Hi Vladimir,

I'm really sorry that delayed of this reply,

I've tried to access in your site, but I hitting this :

Error displaying the error page: Application Instantiation Error: Could not connect to MySQL.

May i know is it your site under maintenance?

Also, can you provide us with your Joomla backend and FTP access so we can directly check on your issues?

it works now, and i add access

Hi Vladimir,

I am really sorry for the delay of this reply as it is a weekend for us here.

I can reproduce your issues, but I noticed when I copy this URL http://xn----7sbbbxobldi6b5anbe7c2j.xn--p1ai/vhod/registratsiya in Firefox browser address bar, then it redirect to http://публикация-статей.рф/vhod/registratsiya , so it show this error ERROR: Invalid domain for site key

http://xn----7sbbbxobldi6b5anbe7c2j.xn--p1ai/vhod/registratsiya (Google chrome)
http://публикация-статей.рф/vhod/registratsiya (Firefox)

Can you check with your webhosting provider regarding this? why it auto changed the site URL?

Second thing is, can you capture a screenshot what site URL you register from your Google account?
https://www.google.com/recaptcha/admin

** If you wouldn't like your site URL display on public forum, I will remove it, because I would like to explain to you what my investigated result.
Hope you understand.

Looking forward of your response.

This is browser specification, not web hosting.

https://developer.mozilla.org/en-US/docs/Internationalized_Domain_Names_%28IDN%29_Support_in_Mozilla_Browsers
https://www.chromium.org/developers/design-documents/idn-in-google-chrome
http://www.opera.com/ru/security/advisory/788

so i think it can be fixed only to check domain name in recaptcha app

if it IDN domain in php code
do convert
http://php.net/manual/ru/function.idn-to-utf8.php

Hello Vladimir,

I am sorry for the delay of this reply.

Thank you for sharing the possible solution on this issue. However I cannot seems to access your FTP due to the incorrect credentials hence I am not able to test the solution properly. Can you provide us with the correct FTP access so that I can try the solution that you posted above directly on your site?

Please advise.

new ftp access

Hello Vladimir,

I am sorry for the delay of this reply.

I've checked the the recaptcha system and it seems like easysocial does not handle the url behavior that being transfer from google to your site and vice versa. Unfortunately this is something that directly related with google itself and nothing we can do about it. Perhaps what you can do is to send the query to google about this issue and see what solution they can offer regarding on this matter.

Keep us updated and looking forward for google response!