I have several small issues

3 - Why Octane does not compute me all the selected thumbnail? (see screenshot)
2 - is there a way to save a personal library of materials via the live DB or something else? I save a scene with the shader will then search through the Append, but there must be an easier way surely.
3 - Are there more shader in the live DB we could go download or site octane shader free or paid?
Thank