PR decoration for GitHub no longer working

We’re running a trial of SonarCloud and everything was going great until our testing branch was merged into master. Now I can’t get it to decorate / report back on the pull requests on GitHub.
I’ve tried

  • adding a new token
  • reinstalling the SonarCloud github app
  • using the SonarCloud app without a token
  • using a token without the SonarCloud app
  • recreating the project in SonarCloud