Dixie - have you tried turning it off in your settings and THEN clearing caches and see if you get the notification? I'm not sure what the issue is....It's been awhile since we implemented this so my memory of some of the nuances isn't as fresh as I'd like? I can post it in the modification support forum on Xenforo and see if the mod creator can give us some guidance. So basically, it was working, but then you got a new Android phone and now it doesn't function (even though you have it turned on in preferences) nor does it prompt you to download? Is that right?
Did you set it up in SAFARI - as that is how the original instructions dictated you do it? Has to be using SAFARI...