Version 1.0.9 of the plugin has been lightly tested on Big Sur. Please report if you have any problems. I personally have moved away from using my own built in InfluxDB Server and Grafana Server, for reasons specific to my setup. However I plan to keep the plugin servers up to date. I'll just need a bit of help testing these included servers as I wont be running them beyond simple release tests.
Big Sur prompted with the normal security prompts, but once appoved through the Preferences -> Security pane, I was able to start both servers.
Grafana has also been upgraded to 7.3.6 in this release.