Font encoding problem in UMG

Hi! I’ve got an issue. I’m creating session using Advanced sessions plugin. To store exrta settings i’m using an array of “Make literal session property string”'s.

These strings contain mainly cyrillic symbols.

When I create a local game (3 different computers), everything is OK. But when i’m creating an internet session and trying to get these extra settings, all the cyrillic characters turn into ???-symbols.

Any ideas how it can be fixed by Blueprints?
P. S. I don’t know how to use C++ at all, so please help to find solution using BP