subscribers must solve puzzle to proof that they are human! How to deactivate it

Hi, when subscribers hit the subscribe button within the eMail, they get referred to this page:

example.com/?mailpoet_page=subscriptions

and sometimes must solve a puzzle in order to sucessfully subscribe into our newsletter.

How to deactivate this puzzle. We already use Google reCAPTURE in background and don’t need subscribers to solve a puzzle.