you need to install v4, or upgrade your license to Enterprise All-Access to be able to use v2018 and higher, by purchasing the annual maintainance from the following links:one year 199$two years 399$
With the annual maintenance you have several advantages like:
- access to multiple DCC plugins from OctaneRender Studio including Maya, AutoCAD, Revit, Houdini, Blender, 3ds Max, After Effects, Nuke, Unity, and soon, Unreal Engine.
- a secondary render slave node for Network rendering, plus access to the ORC cloud rendering service.
- get continuous access to all future updates and new features beyond OctaneRender 4, including NVLink (available in Octane 2018.1 - XB1) and full Vulkan-RTX hardware acceleration on Turing GPUs coming in Octane 2019.