Alright, as lamp needs to be on at night too(the ceramic heater) and there's air circulating i guess the hygrometer is not that accurate. Since it's a cheap ebay one.
I'll buy a new hygrometer and check on that before making assumptions. It even shows 99% most of the times. And no it doesnt get wet...
About the mold that's not an issue since i constatly mix the substrate arround but i'll check on how i can lower the humidity at night. I've ordered a reliable higrometer too.
Or i can bump a little the night temperature to 26°C to see if that helps also.
How can one know the gender of the frog? He seems like a male to me since he's not that big, whats your opinion?
Thanks again.