I had the following issues with a brand new Bullet R1 V2:
-Roaster Disconnected (red dot) status after driver and latest (3.2.3) RoasTime software installation
- same result on a separate laptop ( both using Win 10 pro)
- two listings for Bullet in Device Manager, one with exclamation point (trouble device)
-using supplied USB cable (and other ultra high quality cable for comparison)
Solved issue by uninstalling all drivers and software ( in Win 10 Device Manager and Control Panel) , installing old V2.5.5 software (downloads.aillio.com) and then installing v3.2.3 on top of 2.5.5. All works now!
Aillio was most helpful - I wrote tech support and they actually called me from Taiwan in a couple hours after the initial email and helped with the solution! Very good sign regarding a new device.
Hope this helps other new Bullet owners!