Got the same response. Something like “we are sorry you are not receiving notifications” blah blah “please uninstall and reinstall the app.” What?! I kindly responded that in fact I am receiving notifications but from someone else and said they should escalate to their security team. It concerns me that they do not seem to take such things very seriously. I know the response will be that they didn’t find anything.
“As we receive an update from our team saying that the issue has been resolved. At this time you should not be receiving notifications from outside devices.”
No explanation. Not that I expect them to fully explain but this kind of crossing of devices across customers is not the kind of thing you just brush aside in my opinion.