I deleted my wife from SmartThings and now can't get her back

[NomadTech (Daniel Ionescu)]

@Tom_Guelker
Take a look.

iPhone presence sensor?

Does the Smartthings app have to be active on the iPhone for it to work. It seems to see my phone OK but the wifes phone doesn’t register. I made sure she had the app active in the background. She is bad about dumping all the apps. I don’t know why she does that. Thanks.