Slapper 3 backwards compatible?

Hi… Can you open a project with Slapper 2 with a Slapper 3 license… atm I’m getting inactive plugins in the Slapper 2 project

Slapper 3 should just replace any Slapper2 instances you have.
Either:
you upgraded your license but did not install v3.
or
You installed Slapper Surround but only have a license for ST.

Or some such combination.
If you ever need old installers they are at bottom of the downloads page.