Hi,
In the actions window under materials you have the actions for offsetting the textures and also the scale. This could change the values in the UV offset and scale that you have in your screenshot.
I don't have the package you bought so unfortunately I can't test it.
One trick that always works for me and will give you access to any of the properties you are trying to change is using the set and get property action. Simply drag and drop the material from the gameobject into the variable and you are good to go.