ive gotten the sphinx riddle and the box riddle and ive put in the answers but it keeps saying wrong ive done variations of the right answer and nothing but wrong answer is it bugged if not please help

What is the answer?

I have almost the same problem with the riddle: "When you do not know what i am, then i am something. When you know what i am, then i am nothing. What am I?". I answer "Riddle", but the Sphinx says that this is the wrong answer.

Has anyone faced the same problem?

The box riddle (you find in the forest with the drone) you have to write SNOWMAN

I got another new box riddle: "-the antic book of love" and I tried "stories", "tales", "lore", "letters, "potions" and "spells", but none of it worked. Maybe I'm lacking in my fairytale lore.

Edit: I found the answer, it was "KAMASUTRA", but the format changed from compleing a phrase to just straight up answering a riddle without any tells that it had changed. That annoys me.