Sorry for your inconvenience.
You can change the language of Sellacious latest product module or any module you want by the following steps:
1. Installing the Russian package by Manage -> Extensions -> Install Languages
: Make sure in content language, the language you installed is published already. If it's not published, publish it and proceed to the next step.
2. For changing the module language by Manage -> Modules -> Sellacious Latest Products module -> Languages (Right side of the window).
Kindly go through the attached file.