In response to your open question, may I make a suggestion?
1. Re-season Humidor
2. Calibrate hygrometer. My friend suggested a novel (however not inexpensive) way.
Easier way is to purchase a Boveda pack your choice of % humidity(65%, 69% 70%).
put hygrometer and boveda pack overnight. The reading of the hygrometer should
tally with the printed humidity of the boveda pack. They also have a one step calibration
bag.

Hope this helps
C