Hi @miladk,
Thank you for reaching out to us.
At the moment, we have Passwordless Authentication extension (along with PPWP Pro plugin) that can help you protect your content with reCAPTCHA only.
Users just need to verify reCAPTCHA to access your protected content without entering passwords.
So far, we’ve supported this function for whole (individual) page protection, not for partial and sitewide ones.
Are you open to protecting your whole pages, @miladk?
May I know why you want to verify access by reCAPTCHA only, by the way?
You might want to send these details to our support email – hello(at)preventdirectaccess.com so that our team can support you faster.