Leinad
I just played with my Gemini ASCOM, ver 1.0.50, and found if I un-tick set site and set time and go to advanced settings and apply changes it overwrites time and location to the system/handset. However this data is not updated in the ASCOM settings page.
More likely I think you may have to make your changes then go to the Advanced settings and press the "save profile" and this will save tour time settings etc.
One thing, Gemini ASCOM cannot load custom locations to the handset, they have to be put in the handset manually as this is not an ASCOM call function or something like that.
Does this help?