1. Need Cross-site Tracking.

Zoom Recaptcha feature need write third-party cookie.

1.1 IOS/IpadOS Safari. Settings -> Safari

1.2 Mac Safari. Safari -> Preference -> Privacy

1.3 Chrome >= 83 Incognito Mode, allow third-party-cookie or don't use Incognito Mode

2. Google Recaptcha click Cancel/Continue no response

2.1 use inspect tool

2.2 open network pannel. refresh page and find a google continue link

2.3 open the link and pass google rebot check

2.4 back to zoom recaptcha and click continue

3. Run Zoom WebSDK 1.7.9 only work blow port.

    http://youdomain:80
    https://youdomain:443
    localhost/all
    127.0.0.1/all
  

If you website run other port like https://youdomain:8843 , Please update 1.7.10

4. Use iFrame recaptcha don't work

WebSDK use popup window to check Recaptcha, so you need add blow sandbox when use iFrame.

  sandbox = "allow-forms allow-scripts allow-same-origin allow-popups allow-popups-to-escape-sandbox"