Import from Wunderlist
As Wunderlist has now been obsolete for a few years, taken over by Microsoft To Do. Most existing Wunderlist users have been converted to Microsoft To Do and new users must sign up to Microsoft To Do with their Microsoft 365 account.
Would it be a good idea to either drop the import Wunderlist feature or replace it with something else. i.e. Microsoft To Do or Todoist. Both very popular but basic. Users may be looking for a more advanced platform.
Just a suggestion.