Once a Yubico Key is imported (or attributed) to a user, you have two choices:
1) Double-clic on the user, select hardware token and select the Yubico Key defined.
2) As the self-registration is enabled by design in multiOTP Pro, …
Hello, the shared secret is the secret that can be shared in the device section.
If you want to authorize your whole network, you can set a device with a subnet, for example 172.16.0.0 / 255.255.0.0
Is it possible to organize a remote control session, as your problem is probably related to your ZyWALL USG configuration and has nothing to do with multiOTP Pro. In your log, no authentication is coming in the multiOTP Pro from the ZyWALL US…