SSH connection problem to two FreeBSD VMs externaly hosted

Hi,

I have two FreeBSD externaly hosted, one at Hetzner and one on Azure.

Both systems running latest 14.3-RELEASE, but I can't no long connect to them,
wether from a local 14.2-RELEASE, or the latest macOS. Nothing has changed in
terms of configuration. All systems use public-key authentication. The error
I am getting is the following:

sshd[10965]: error: Fssh_kex_input_kexinit: unknown kex type 10 [preauth]

Has anyone an idea whould could cause this?

Seeking out in forums about trying different KexAlgorithms options didn't
solved the problem.

Any help is much appreciated!

--Gordon