Php Error Uncaught Error: Call to undefined function on v9.2.0

Hi @pabval2,

This issue will be resolved in the next update of the plugin, but you can already obtain the version of Really Simple Security containing the patch by clicking here.

You could also download it from GitHub instead.

If you can’t access the WordPress Admin Panel due to the issue, please follow the steps listed in this article to deactivate 2FA temporarily: https://really-simple-ssl.com/instructions/disabling-2fa-when-you-are-locked-out/

This should allow you to access the WP Admin once more and install the new plugin version including the fix (Plugins -> Add New -> Upload Plugin). I’d also recommend Resetting the 2FA status of your Account prior to re-enabling 2FA (Security -> Settings -> Login Protection -> 2FA -> Users -> Reset), because it looks like your Grace Period to configure 2FA has expired.

Kind regards, Jarno

Great! This fixed my issues.