Tenda AC21 Smart WiFi Router - Dual Band

the instructions state to hookup the old router with this model via ethernet cables to download the passwords and user name to this router but that is not the way it seems to work. i tried multiple times to hook this device up and followed the instructions to the letter and it would not let my computer connect to the internet running windows 10 on my laptop. What it ends up doing is erasing the password and user name and you have to go on the website to change it. After you go through all that it still wont let you connect and your old router is toast due to what i think is this model erasing your original info. I have to use ethernet cables until i can figure out how to get my wifi back. Everyone, pass this one up the aggravation is not worth it