Решено I've got a problem with the third guardian.

[struty]

After when I learnt the Demon's Language and read all desktops in Xardas's Tower, I go to Tendor - the third Guardian - and there is a problem because I don't have any dialogue with him. Of course I put a ring.
Did something change in AB or maybe there is a bug?

 

[Irga]

You have to read ALL of desktops to unlock dialog with keeper. Perhaps, you missed one of them.

In case - there are 3 (three) desktops near Xardas

 

[struty]

@Agri Yes, it was three desktops near Xardas. I missed one of them. Thank you for your help.