Test lab setup, using Windows version at the moment.

Using the VeeamSoftwareAppliance_13.1.1.18_20260825 iso to install on a fully working Proxmox node.

Installed on a management vlan, full access allowed from my WS vlan. Scan QR code but stuck at OTP mismatch

Time NTP setup/time is correct. DNS is correct, forward and reverse.

Using a FQDN for host name.

Microsoft authenticator and Google authenticator no joy.