I have moved this topic from the ‘Marketplace’ forum to the ‘Unreal Studio’ forum.
I have confirmed that you have joined the Unreal Studio beta, so you will find the Unreal Datasmith plugin on the Epic Games launcher by navigating to: **Unreal Engine (on the side bar) > Library **(on the top bar)
And then scrolling down to the Unreal Studio Beta section. Then click Install to Engine.
You can confirm that the plugin has been installed by clicking on Installed Plugins underneath the engine slot on the **Library **page.
Once you load the Unreal Editor, you will see the Import Datasmith button up top.
Just in case the plugin is installed, but you do not see the button, in the Unreal Editor navigate to Edit > Plugins > Unreal Studio. You might see that some of the plugins are grayed-out and can not be enabled. If this is the case, you will probably have a message near the bottom of the window saying that your project is not an Unreal Studio project. Click the ‘Convert and restart’ option. This should re-load the editor and allow you to use the Datasmith plugin.