Preface: We've looked for a phone number and can't find it. For a mission-critical tool, phone support is extremely important.
We attempted to add 2FA via Duo, following the instructions in your guide. We entered the hostnames and integration/secret keys exactly as they were supplied by Duo, and have correctly added the 1Password application and users in Duo. After doing this, attempts to log in failed with "The server's time may be out of sync". Removing the application from Duo yields "Invalid integration".
All of these errors are blocking our entire team from logging in. We're at a dead stop and spending thousands per hour in lost productivity. What's going on here?
1Password Version: Web
Extension Version: Not Provided
OS Version: All
Sync Type: Not Provided