Do all the devices have the same issue？ or just some of them?

Tried to forget the profile and reconnect to the network? What happened? 

It mainly happens with the iPhones. Only I believe because they are the only devices than go away from the network and have to reconnect. Everything else stays in the house and stays connected. If I disconnect anything from the network and reconnect it gives me the wrong password issue. ?? I’ve tried removing profiles, renewing leases. The only fix is to turn the extender off and on. This is a frustrating thing to have to do . I’ve tried setting the router to a specific channel, that doesn’t work. I’ve tried It so that is wasn’t a mixed type (b/g/n). Nothing. I’ve ran out of ideas! 

have you ever checked the firmware of the extender? If it is not the latest one, update it first. 

Then you can reset it and reconfigure to give it a go. 

@Rich3451 I am having the same problem. Tried iPhone and iPad. Am stuck. Looks like it's going back to Amazon 

@Timmoncaster 

Good day,

Thanks a lot for your time and patience.

Really sorry for the inconvenience.

Did you also have TL-WA850RE V4?

Would the signal light lit up all the time on the 850RE?

Except the Apple devices, how about other devices and would they have the same issue as well?

Thanks a lot.