Ok so I have had a few minutes to pull the latest master on to my device. It starts up as you expect with default settings, however I have no access to any maps. Just Loading and Downloading tiles are displayed.

Every map you select throws the error that the server returned no image file and that the "server must not like you"

The only thing I can think of my side would be it's installed and run via terminal straight from the uSD card, which may affect tile storage?