DONT BE DUNKING the eggs in water. A lot goes into the hatching process and some things we dont see or know when event are happening, 21 days is the average rule.
At this point, I would suggest candling the eggs if none have externally pipped. Use a very bright light and look for shadowing, or other signs such as live veins, listen for them, and any faint movements. If you are seeing life, leave the eggs alone. If you watch them very closely many times you can see them moving. If an egg has not internally pipped in a day or two it might be a later term quitter.
Give the eggs more time if you see life.
The opening of the incubator becomes an issue when an egg has externally pipped. The instant drop in the humidity causes shrink wrapping of the inner egg membrane around the chick. If no eggs have externally piped you can open [quickly] to check an egg. If you think an egg might be externally pipping soon, dont open the Bator. The humidity won't be up to proper level. Once the chicks start to hatch, they create more humidity. I have had to open the incubator when an already hatched chick made his way into the water bowl.
Sounds like patients might be your best friend, I know it's not easy to let the chicks do what they need to do

. Good luck! <3