Resolved
The issues with two-step login with Duo have been resolved.
Update
Duo has reported that there has been some success with the two-step login text and phone call options, but they are still actively working toward full restoration and will provide updates as soon as possible.
Update
Duo has reported that they have identified the issue with the text and phone call options with two-step login and are working to resolve it.
Investigating
Duo is reporting issues with the text and phone call options when using two-step login with Duo. The Office of Information Technology is monitoring and will provide updates as they become available.