Error with Google Recaptcha v3 enabled

I have enabled the Google Captcha v3 using the options of your plugin.
But I still get error.

ERROR for site owner: Invalid key type

I have enabled it under “Challenge & Deny section.
I also tried using this plugin to enable captcha v3. https://www.ads-software.com/plugins/simple-google-recaptcha/

It works. But your plugin shows captcha error.

The page I need help with: [log in to see the link]