Missing reCAPTCHA in Outlook for Mac

Hello All

I finally got add-ins working for the first user in outlook, unfortunately when trying to authenticate with zoom, I only get the form to fill out the credentials, but reCAPTCHA won't load (not visible), so the login button stays greyed out.

Happy for any help on how to get the Captcha-Code visible.

Using Outlook for Mac Version 16.61 with Microsoft 365 licenses

Thanks

Alex