Hi Dave,
From what you say it does not appear as though you machine is performing as it should. However I am concerned that you have not done what we suggested you do (or at least not confirmed that you have done these)
Please go to the front of the B2 and using the display and round knob, run this command.
Main Menu > Settings > Scan Disk
After this command completes, again from the front panel do this :-
Press in and hold the Stop/Play button until 'saving' appears on the display. then release the button and wait. Once the time reappears on the display, reboot the B2 by powering it off, wait 30 seconds then power it on again and see if this has cured the problem.
By the way, your WiFi strength of -39dBm is very good - this should not be causing any issues.
When you have the machine going again, try opening the Web UI from a browser page by typing the B2's IP number in the search bar.
Fred