Apache Radius Authentication not working!

On my Rocky8 server the Radius authentication for SSH is working fine.
Also for application phpIPAM (which has its own settings in the application).
But I try for hours now to make it working with Apache using mod_auth_xradius.
I see the login mask, but it keeps showing again and again.
In the logs I see “Password Mismatch”, but I know it is correct, because it works when connecting with SSH.
Has someone a real working solution?