Stuck in a Sandy Scandal

Hello everyone,

I'm completely stuck in "A Sandy Scandal" quest. I go through the first cutscene in Briggs shop without any issue, but then when I enter the basement to enter the vault, the buttons to make the code are completely impossible to interact with. They are there, but nothing happens whenever I click on any of them...
Another interesting thing to note though, my quest updated to the next step already ("Inspect the vault"), even though the vault door on the right is still completely closed.

I tried everything : /class, /kill, changing worlds, putting the quest item in my bank temporarily... But nothing changes.

Can someone help me ? I haven't seen anyone with the same issue through the forums yet...

Thank you