I’m having the same issue. What I think happened is that when I was first prompted to enable Manage, I wasn’t logged into the proper WordPress account. So that somehow disabled Autoupdates and now, no matter what I do, I can’t figure out how to turn it back on.
Here are a few URLs of my websites with this issue:
https://Go2B2.com
https://BambinosCafe.com
and lots of others. Once you show me how to fix it for one, I can do it for all the others.
Thanks for your help.