Do you only get one chance at the level 4/5 of SoT?
I enter once… a while ago… Many levels later… I wanted to try again.
I have a skeleton key, but after lvl 3 boss… I do not see the Gate.
Is access to this only from the quest?
To reopen the gate all you need is a skeleton key, if you don’t see the gate… not sure what to say, it should be there at level 3 in the same room as Zarthuzellan.
You get one try per game session. If you quit to main menu and then go back, you are able to take another shot.
As for the gate being missing, that’s a whole different story. Could you post a screenshot? If it’s really gone it should be reported as a bug.