Implementation instruction for UE 5:
Make sure the plugin version is not older than 1.31
Install the plugin for UE 4.27
In your project create a folder called Plugins
Go to /Engine/Plugins/Marketplace/ and copy the folder called SnappingHelper into /Plugins folder you just created
In /Plugins/SnappingHelper/ delete folders Binaries, Intermediate and file SnappingHelper.uplugin
Extract archive into /Plugins/SnappingHelper/
Please let me know about any implementation difficulties.