I'm just checking on this subject to see if the problem was solved after doing what the moderator instructed to. Because I'm having the same trouble now that Quickbooks Commerce is been discontinued and I can't get Quickbooks Online to track my inventory.

I have already cancelled my Quickbooks Commerce Subscription but it is still telling me they won't cancel it until the 29th. Is there anything else I could do to add inventory products to my Quickbooks Online account?