Just in case, we'll rebuild the game using an older version of the engine. The issue might be related to the recent Ren'Py update. The Ren'Py file is standard across all projects.
We’ve sent feedback both to the Ren’Py engine author and to Kaspersky Lab. For now, we rolled back to the previous version of the engine. I’ve reuploaded the game, for now only to Mega — version 0.551a