You didn’t download the template, you have the raw pugin which is only classes and actors, the raw plugin doesn’t have any blueprint content it is a c++ plugin. You would have to re-base your character onto a VRCharacter and then map buttons and actions to use it like that, it doesn’t magically overwrite your projects game modes and settings.
https://bitbucket.org//vrexppluginexample/src
That is the example template which has a bunch of BP implementations and reference material already in it, but its not simple… Its a full multiplayer enabled feature showcase and is packed with stuff.