Wyze has not enabled the ability to share SD card playback to shared accounts. When I asked about this in an Ask me anything event, they indicated it was for security reasons because they can’t limit the shared person to only view recordings after the date it was shared to them. They are able to do this with cloud events, but not with playback, so they just don’t allow sharing playback.
I’ve offered solutions to this, but I doubt they will implement any of them anytime soon.
For now I do as stated above and just give my wife access to my account and showed her how she can mute notifications instead of turn them off when I still want them.