@oskir, you can refer to this article to understand what different status on Duo Universal Prompt means. Duo Universal Prompt Update Guide | Duo Security
When the update is available for OWA, you would see the status as Duo Universal Prompt Update Gu...
Yes, RDP traffic can be proxied through any forward proxy. While installing you need to specify the proxy address and the port number of the proxy server. See step 2 “Configure Manual Proxy for Duo Traffic” Duo Authentication for Windows Logon and RD...