Answer from @Fox :
The service domain has moved, for the action to work, in the "Server URL" option you need to specify the value "api.cap.guru".
ReCaptcha module turn it off
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ReCaptcha module is enabled, it can reduce browser authenticity.
So it is recommended to turn it off, unless you are working with recaptcha.
Should I take this warning seriously? -
If you need to solve a captcha, then you use the module. If you don't need to solve a captcha, then you don't use it)
There is no specific answer to your question, it all depends on the site you work with.