Your comments

  • I edited the two functions in background.js as you specified (and commented out the original code)
  • I enabled developer mode in Brave extensions and loaded TabsOutliner unpacked

What did you mean be "remove _manifest"?  I only see a manifest.json file in the extension folder.  If I remove it, the extension will not successfully load at all.  Not even in UNPACKED mode.

What is the process for getting a license key to begin with?  Do I need to first install TO under a Chrome browser while signed in to get a license key and associated emails?