P.S.
If you have trouble connecting with SSH then download the latest Putty and make sure under SSH/Host keys to move ed25519 to the top and untick "Prefer Algorithms for which a host key is known" or forget the HOST keys
If you have trouble connecting with WinSCP under Tools/Clean up Clear Cache
ho1Aetoo wrote:
So for me RSA and Ed25519 works without problems.
But I had to delete the router from known_hosts.
In the posts I quoted everything is explained even how to delete the fingerprint when you use Linux CLI ssh
the post of egc refers to windows users
and my post refers to linux CLI users
To explain again.
Each ssh server sends a fingerprint, the fingerprint is stored by the clients (under linux in the ~/.ssh/known_hosts)
Since the router now uses a different hostkey, the fingerprint has changed and clients can't or don't want to connect anymore.
This can be fixed by deleting the stored fingerprint.
Instructions for Putty, WinSCP and Linux are above.
If you use something else then google is your friend.
as a small hint, the linux instructions also apply to Macs