There is a new firmware out! It fixes bugs that some people encountered, and it brings up a redesigned hotspot, which will be way easier and more logical to use.
To download the firmware, please visit: http://www.mladendinic.com/nixietap/nt-downloads.html
Along with the new functions, there is a new guide on how to use the Nixie Tap. It's hosted at: http://www.mladendinic.com/nixietap/nt-guide.html
Have a nice day!