Version 2.0.1 shows “Approved” via automatic validation, but the add-on page displays “This is not a public listing” and returns 404 when viewed while logged out. Can you verify whether this add-on is listed or unlisted and whether additional review is required for public publication?
Check in your Add-on Developer Hub:
Client Challenge
Do you see a green “Approved”, or is the “Status” row missing? (as in the second addon below)
(the first one is a public addon distributed through AMO, the second one is private - not on AMO)