Confirm that your email address with Splice is correctly tied to an email address you can login to

From the Splice Desktop App install Arturia Software Center

If you're not seeing Arturia Software Center in the Apps & Plugins section of the Splice app, log out and back into the Splice app

Check your email for a message from Arturia to setup your Arturia account

Log in to the Arturia Software Center and install the Arturia plugin

Once signed into Arturia Software Center, you must “activate” the Arturia plugin. To do so click on the “Activate” button.

Sync button on Arturia Software Center will retrieve any updated license info from your Arturia account.

Restart your machine

To get the Arturia plugin up and running in Ableton you need to check Ableton's AU/VST settings.

Navigate to :

Ableton

Preferences

File and Folder

Make sure "Use AudioUnits/VST" are all checked and hit Rescan.

Windows users will only have the option "VST Plugin Custom Folder", manually navigate to the location you installed your Arturia plugin.