General captcha settings are located in "Application Settings" - "Captcha Protection".
1) Go to the "Sites" page and click the "New Site" button.
2) Enter the domain of your website in the "Hostnames" field, make the rest of the settings if you wish, and click the "Save" button.
3) Click the "Settings" button for the newly added website and copy the "Sitekey" (public API key).
4) Go to the "Settings" page and copy the "Secret Key" (private API key).
Paste received data in "Application Settings" - "hCAPTCHA Service".
1) Go to the "V3 Admin Console" page.
2) Enter the name of your website in the "Label" field.
3) Select the captcha type "Challenge (v2) — I'm not a robot".
4) Specify the domain of your website in the "Domains" field and click the "SUBMIT" button.
5) Copy "SITE KEY" (public API key) and "SECRET KEY" (private API key).
Paste received data in "Application Settings" - "reCAPTCHA Service".