Connecting to a Bluesound Vault 2i

I know there are several Bluesound users on the forum, and I am not getting any support from Bluesound.  I just received an new Vault 2i and I want to control it using a Windows 10 Tablet.  I loaded the BluOS app onto the Tablet, and the Tablet has recognized the Vault.  However, the BluOS app will not open, or recognize the Vault.  Vault is flashing green which means "Looking for a Network".  Can I use this product without connecting to the internet?  If so how?  Do I need a Router?  Will a Router operate without internet access?  All I want to be able to do is connect the Vault to my DAC and control the Vault with my Tablet via bluetooth and the BluOS app.  I don't want to stream anything.  I don't to communicate with any other devices.  Any help, guidance, or clarification would be greatly appreciated by this challenged new user.  Thanks.