Upgrading to current rapid weaver

I need to upgrade from 2010 rapidweaver. I am on a Mac desktop using Big Sur. Rapidweaver from 2010 will not open on Big Sur, so how can I upgrade.

With a version that old(!) I’m sure you will simply have to buy a new license for the current version: Best Web Design Software for Mac - RapidWeaver
But maybe @dan may tell you if there’s a cheaper way…

You can upgrade to the latest version here on our website:
https://www.realmacsoftware.com/rapidweaver/upgrade/

Hope that helps.

With thanks, that worked.