Welcome to BYC! good luck. 

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Thank youWelcome to BYC! This sounds like a question for the quail lady.. @Kiki
Thank youWelcome to BYC! This sounds like a question for the quail lady.. @Kiki
Thank youHowdyWelcome to Backyard Chickens. Enjoy your time here!
If your quail eggs haven't hatched by day 20, they are either infertile, or (dis) died in shell. Have you tried candling the eggs to see what's going on with them?
You really need a calibrated hygrometer for your incubator to be able to know what the % Rh is in the incubator. ACCURITE makes a cheap but accurate hygrometer, once it's been 'salt test' calibrated.
HTH
Thank youWelcome to BackYard Chickens. So glad you came.Besides looking for Kiki, you might look in the Forums and Articles sections to see about hatch delays. Best wishes, and enjoy your birds!