A couple of suggestions for SonarQube Scanner for Jenkins, based on using the latest v2.8.1 with Jenkins v2.138.1
It would help if “blue question mark” inline help were provided for some of the fields. eg Server authentication token. The help should link to the documentation Analyzing with SonarQube Scanner for Jenkins.
It would help if the documentation (link above) had an expanded “Global Configuration” section… eg, linking to user token page.
Most important/useful: please consider adding a connectivity test button to the “Global Configuration” UI. I am in the process of migrating my entire infrastructure to new environments… and it took 20 minutes (time to build a job) just to know that my token was invalid!