Various network malfunctions, as well as issues with downloading and updating the game, may cause the game client to crash or work improperly.
Try fixing the game client using the Repair Game option:
1. Run Blood of Heroes Launcher
2. Go to Settings (top-right corner) > Repair Game
The launcher will check the integrity of the game files and download the components that need repair.
If you encounter any issues while downloading or updating the game, try resetting your launcher settings: Settings > Reset Preferences.