Default encryption module - Encryptionpassword can't be set


I tried to activate the encryption module but there’s no field to add the encryption password:

Could you help me with this?

Many thanks in advance,

I am experiencing the same problem. The App doesn’t seem to work right. Also, i could never choose to enable a master-key.
Could not find a solution here or elswhere on the web.
Anybody got a hint or a solution?