Connecting to Volumio via SMB from Mac

I have a new Volumio install on a RPI3 and I have a music collection stored on a drive attached via USB

I see Volumio on the local network, but when I try to connect it via SMB I can only connect using the guest access, not the default user of Volumio with the password Volumio

What is also strange is that as the guest user I can I have write access to the USB drive…

Is this the way it should be? How can I make the default user work and change the password?

You can’t change the default password of account Volumio, if you do this plugin install, OTA will fail.