Preshared Key in openVPN Instances

[Dmitry_K]

Hello everyone!
Is there any way to use only PSK in openVPN Instances, like it was in Legacy Servers? The problem is, that we have many old routers, that can PSK openVPN only (USG). Maybe somebody managed it to configure Instance Server that uses Static Key as a Preshared Key?
Thanks!

[shpokas]

I resurrected this old post, but I am equally concerned.
Cannot migrate legacy OpenVPN PtP tunnels because other endpoint does not support certificates.

What can be done here?

[shpokas]

OK, pfSense gives explicit warning that PSK mode is deprecated by OpenVPN and will be removed.
I wish OpnSense would do the same to avoid confusion.