We are here to help you to turn off the wi-fi on your Range, Shawn.
I have shared the model's user manual link below, which indicates the steps to turn off the Wi-fi and operate the SmartThings app on pages 55-57.
https://downloadcenter.samsung.com/content/UM/202211/20221125145935866/NE9000T_NE63T8951SS_AA-03_EN_MES_CFR_221123.pdf
You also check this Samsung link about Connect and use your Samsung range with SmartThings.
https://www.samsung.com/us/support/answer/ANS00049148/
To follow it easier, you can watch the video link below.
https://www.youtube.com/watch?v=QzucR0NoRmw
If you have inquiries in the future, feel free to reach us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
You can provide this reference number 1145315053 and it can help our team pull up your information.
^Rainly