How to unblock an access to this website is blocked?

Hi!
I test the plugin because a user gets stuck in front of the captcha (probably the hidden field) and by testing I get stuck with the message:

Your access to this website is blocked! The execution of the application has been stopped.

How to unlock because even my admin access displays the same message!
Thank you in advance for your response.

Bitte anmelden, um die Antwort zu sehen. Achtung: Eine gültige Subscription wird benötigt, um einen Account zu aktivieren.