Hey! Sorry to hear that there is an issue with the riddle on your playthrough :( I'd really like to know what could've caused this. Could you send me a screenshot of the wall outside the cave where the solution should be? Ideally with some information about your system / browser you played the game with. Just to avoid any misunderstandings, you can check the playthrough of Grimbag (15:28) how the hint should look like. He posted his let's play in this comment section.