I also had a problem with forms. They weren’t working and I had to upload older version than 5.4.
Please, read this article about GDPR/CCPA Cookie Consent. The answer of the problem is here: https://complianz.io/why-the-wp-consent-api-is-important-a-case-study-with-cf7-and-recaptcha/
I hope Takayuki Miyoshi can resolve this situation because I love Contact Form 7. 🙂
I have the same problem. When I click to authorize, the next web page is not available and I cannot continue to setting the plugin.
