To check for updates of Plasmonic, in the Options menu (next to the logo), do Check for Updates. If an update is available click Download Update to access the downloads page.
Customers can also download the full version installer here. You will need to enter your license key/serial number to access the downloads page.
Get serial numbers (license keys) for purchased products: https://rhizomatic.onfastspring.com/account
Indiegogo backers, please contact support@rhizomatic.fr