If you are running a Joomla 2.5 site you may have already encountered issues with your reCAPTCHA v1 keys. This happens because Joomla 2.5 supports only reCAPTCHA v1 API, while Google is shutting down v1 API in favor of v2 API.
After doing some research for one of our clients we could not find any working solution, so we decided to write our own patch for the existing Joomla 2.5 captcha/recaptcha plugin so it supports reCAPTCHA v2 API. We have also included instructions on how to call the new version of the plugin from a 3rd party component or other extension.
You can download the distribution file (fix + documentation) by clicking on the link below:
Here is a screenshot of how it should look like:
If you have any questions feel free to contact us at firstname.lastname@example.org