Hi ​@Rachel Aguiar, thanks for reaching out!

To help you better, could you please clarify a few details?

1. Can you confirm if you are trying to add members from the Team settings > Active users section or from somewhere else?

2. Are you using a Free plan or a paid plan (like Starter, Business, or Enterprise)?

3. Are you the Team Admin or Company Admin (if on Enterprise)?

4. Can you share the exact steps you’re following when the 404 error appears?

5. Are you adding users by email address, or through an invite link?

6. Does the issue happen with all emails or only specific ones?

7. Which browser are you using, and have you tried another one (or incognito mode)?

8. Could you send a screenshot of the error (if it doesn't show private information)?

9. Have you or someone else made recent changes to your team or plan settings?

Let me know, and I’ll do my best to guide you from there!