[2022] [ToF] Gate won't open in Venutius Tomb

Hi, went into the grave, did my 3 taks (moving the columns to their locations), got 3 (one for each column) little cutscenes with the sound as if the gate wants to open but is stuck somehow and the rubble falling from the ceiling above the gate.
But that was it - it won't open. So I loaded a Savepoint from last night. Went there again (did not even have the Fast Travel unlocked - so never been in this area before) - watched 3 vids before entering. Did it exactly the way they did (which was the way I did it before myself) - same thing - 3 cutscenes after placing the columns, visual and acustic Feedback. After the 3rd cutscene the gate still won't open.
Happy to hear from you with any ideas.

Best, Linda