Evernote - Setup complete but not working
TL;DR. You must use checklists and at least version 10 of Evernote.
In May 2022, Evernote changed the code underlying checklists which impacted how TaskClone can function. You must use version 10 or above of Evernote and must use checklists (not checkboxes or Evernote Tasks). To create a checklist, use the icon on the formatting bar (see image below). Do no mix checklists with other list types (numbered, bulleted).
Note: Evernote has not yet provided developers access to their newer Evernote Tasks feature and "checkboxes" are different than checklists and no longer work with TaskClone.