RADIUS 2FA not Working

Hi ,
i'd like to implement 2FA using Radius .
I've configured the 2FA section and i've assigned the configuration to a my user .
When i try to connect tio devolutions server it 's not working ; in particular we found, sniffing traffic between Devolutions Server and our Radius server , that the user password is not crypted correctly using the secret ( that is the same on radius server and devolutions server ) .
Another thing we found is : if we try the test button in the form where we can configure our radius parameter it also fails , but sniffing traffic we found that the password is correctly crypted using secret
Our devolutions server version is : 2022.1.13.0