8. Why can I no longer use the static password?

There was probably a corruption of the settings.dat file, located inside the path C:ProgramDataSupremoRemoteDesktop.
We suggest to disable the option Start Supremo at system boot (unattended access) if enabled, close Supremo, delete the settings.dat file and then re-launch Supremo.
Of course, Supremo must be re-configured. The ID of the machine may also change, in some rare cases.