How do the eggs look? Are they still nice and white and plump? If so, your humidity may be fine. It's actually recommended that your humidity be around 95%. Just make sure the water is not dripping down onto the eggs; if that becomes a problem, try burying them more with your medium (just don't pack it in tightly around the eggs), as this can help protect them from dripping water.

The water/medium ratio should be 1:1 by weight, not by volume. For the most part, it should clump together when squeezed, but break apart easily. No water should come out when it is squeezed.