Hi I just wanted to add that the pattern for the mermaid thing to get the pearl is wrong - it is actually 1-4-5-3-2. Just wanted to share as I spent some time in game trying the same code and wondering why it wasn't working 😅
This looks like a bug on your side. I can confirm the code is 1-5-4-2-3 on PC (Steam 1.4.4, 1.4.5 and 1.5.4).