If you're vermiculite or perlite or whatever substrate you're using is wet, you have them in a closed tub with no air holes, it is impossible for the humidity to not be near 99%. So if that is how you have it setup plus the press and seal, your humidity will be fine but you have to stop opening it, that's what's letting all the humidity out, close it and leave it. Then just be patient until they hatch.

If you have air holes or you're substrate is not damp, fix those issues and stop opening it and your humidity will go up and be fine.