The latest FreePBX version insists on setting up a password for a voicemail box, at least in the “useranddevice” model. I suggest to remove this requirement to allow users to decide whether to protect their voice mail boxes or not. If so, they can enter passwords to protect their voicemail boxes; if not, they can leave this field blank so voice mail access is instantaneously.
Prior FreePBX version 188.8.131.52 did not have that requirement, which is very concenient. Please consider dropping the password protection requirement for Voice Mail boxes.