Hi Roman,
I too have the Genimi 1 and use NINA.? It would not flip at first and I found that it is all to do with the Max/min Minutes after meridian (two settings) and the east and west safety limits.? The mount flips now with no issues and I do not miss any imaging time at meridian.??
I recommend that you watch the attached blog from Losmandy on NINA meridian flips.? It is very informative
Regards,
Robert
Robert Patterson