@TP-Link I finally found the problem with my network's "Incorrect password" I have done the setup trough my phone so when I've entered the password I've pressed the space bar in the end by accident....

@mommyshielalala i'm getting the same error. I have Deco M4, and I can''t join the network with the correct password. Every time it gives me error - Incorrect password.. Did you find any solution to...