Hello,
Yes, the Patcher section is a tool designed to apply official fixes and updates provided by the theme. It is generally safe to apply all available patches, as they usually resolve bugs and improve compatibility.
Currently, there’s no built-in feature to receive email notifications when new patches are available.
Regarding the red PHP alert, it usually indicates that your server value is less; increase the “PHP Max Input Vars” parameter to 10000 or higher in your PHP configuration. You can contact your hosting provider for help on this matter.
Best Regards,