Thank you, Nikolay, for your explanations. So, the problem now looks more as a technical one.About my suggestion to have some texts translated into Russian by Agora, don't have illusions: it was just an effort to imagine how we could meet your needs, but I am almost sure that it wan't be possible to realize it.
I hope that the users of this Conference that know technical issues better than me will be able to help Agora to improve the fitness of the system for the Russian speakers.