Suddenly getting double notifications on all V3's

You’re in the Beta group: https://forums.wyze.com/g/Beta?filter=paul.n.jody (you can see by clicking that link). You can join or leave that group at will here in the Forum, and you can also change the “Flair” setting in your Account Preferences if you like. If you’re not actually using the beta app (opting into or leaving that channel is a separate step in Google Play Store when you’re an Android user), then you might wish to change your flair and group memberships, as other community members might think you’re using a beta app when you report problems here. That’s totally up to you, though, and even if you make those changes you can join again at any time.

Any time I see someone reporting “Complete Motion Detected” notifications, I wonder if that person has “Other Motion” (and possibly “Other Sound”) selected for “NOTIFY” on the “Custom Detections” screen, in which case you might want to check something like this:

I’d probably double-check settings there for each of your affected Cams and turn off notifications for those generic motion events if you’re trying to use only Smart Detections with a subscription.