Unable to invite users through the Invite Users button

Issue Summary

Some costumers are experiencing issues when inviting users through the Invite Users button. They get the following error message:

Invalid recaptcha token provided in request.

The issue happens when the customer still have the "Add your team" form:

 

Steps to Reproduce

1. Go to User Management (https://admin.atlassian.com/s/<siteid>/users)
2. Make sure that the message "There's a team behind every success" is appearing.
3. Click on "Invite Users".
4. Try to invite a user.

Expected Results

The user should be invited.

Actual Results

The user is not invited and gets an error message:

Invalid recaptcha token provided in request.

Workaround

Users need to to invite the user by adding their email address to the form instead of using the "Invite user" button.