It won't budge no matter how much I swivel and move my mouse cursor while hanging onto it... how does this work?

Hi there, I'm in room 3 and I keep entering ANKH (symbol of life) but it won't accept this answer. I even tried to use the two different cups that are available but I have had no luck of unlocking it. Is there a system issue? I don't understand why it wont accept my answer....

Is there anything to be done with the golden door in the fourth chamber? is it unused or an easter egg?

I played the game twice through two days ago and got 100% achievements. Now I see there are four additional hidden achievements. Are these solve the room in less than 10 minutes? Or something else?

Will there be future patches with more escape rooms? I played through all 4 rooms with my community and we LOVED the game! Just wanna know if there's more coming anytime soon?