Today (30th) I got a notification about a weekly report on my phone event though I've turned reports off.

I turned it off sometime last week after I got my first report.

I suspect that it's not completely working at all, or that gives reports when, in my case, the week has started already. But reports are, I guess, generated after week is done.

This is how the report looks like on my phone:

It clearly shows that it didn't register anything on Wednesday even though I've used the Wi-Fi as much as any other day that week.

I updated the Deco system 17th when I bought the system and there haven't been any updates since.

EDIT:

It should be possible to have reports but disable the notification.