Big Sur, Beta 5 Apple Mail Plug-in doesn't enable - SpamSieve Beta version upgrade needed?

The latest version of Big Sur, Beta 5 causes a failure to the latest SpamSieve I’ve seen (2.9.40b3)! Is there an update? Beta 4 worked fine with this version. Apple has changed something.
Screen Shot 2020-08-21 at 11.36.58|390x500

A post was merged into an existing topic: SpamSieve Public Beta and macOS 11.0 Big Sur