Change Snapshot Pro from Network Activated to Single Site Install

I used to have Snapshot Pro network activated then decided to remove it. Now I've decided to use it again on a site-by-site basis. The problem is that I seem to have lost the ability to use it on a site-by-site and only have the option to network activate it.

I'm guessing there is something in the database that needs to be updated or cleared, but I wasn't able to find it.

The plugin is installed and not network activated.
The plugin does not appear on the Pro Sites -> Premium Plugins page.
On a sites All Plugins page, Snapshot Pro is shown as "Network Only"