I would try a factory reset.
I don't own the Vault, but I think it is holding down the button for 30 seconds until it changes color.
You can also get support via Bluesound Website.
https://support1.bluesound.com/hc/en-us
There should be a little pop up at the lower right corner for support.
Click on it, type Vault, and it will list some things, but below it is a Contact Us button.
HTH
B
I don't own the Vault, but I think it is holding down the button for 30 seconds until it changes color.
You can also get support via Bluesound Website.
https://support1.bluesound.com/hc/en-us
There should be a little pop up at the lower right corner for support.
Click on it, type Vault, and it will list some things, but below it is a Contact Us button.
HTH
B