The inclusion of "1.7.3" in your query implies a specific version of the mod menu for the game. Here are some general points you might find useful:
Enable "Install from Unknown Sources" in your device settings. outwitt granny mod menu 1 7 3 verified download
Installing a modded version of Granny requires you to replace the original game. The inclusion of "1
Never download from YouTube video descriptions. Instead, go to the creator’s Discord or Telegram, which they will link in their video bio. outwitt granny mod menu 1 7 3 verified download
Uninstall the original version of Granny from your device.