reCAPTCHA not working?

[Dusan]

I used another account to simulate users registering and after pressing the rechapcha symbol, it shows pages of pictures to select from. Is this the intended use? It is really really tedious. Why is it not working by a single click as intended?

[GregChapman]

Dusan wrote

after pressing the rechapcha symbol, it shows pages of pictures to select from. Is this the intended use?

Yes!

Why is it not working by a single click as intended?

Because you failed to prove you were human. See:
https://support.google.com/recaptcha/?hl=en