I made a bunch of sales between when I logged in yesterday and today, but I never got a notification for any shop activity. The only update I did get was that my discount buff wore out.
It's not a super huge deal or anything, it's not like I'm wildly inconvenienced by this or anything dramatic like that. lol. I just figured I'd let you all know!
^_^
Are you noticing that you still aren't getting this notification?