3d printer needs 2.4 and can’t connect

Hi there, @user_piha8v! We have you covered! I have a lot of devices that need the 2.4 GHz network only. The steps at this link get them working without issue in my home, https://www.xfinity.com/support/articles/issues-connecting-devices-wifi-network. I have only ever needed the first set of steps:

1. On a device connected to your gateway, open a browser and go to http://10.0.0.1.
2. Log in to the Admin Tool.
3. Select Connection, then Wi-Fi.
4. Click Edit next to 5 GHz.
5. Select Disable and click Save Settings.
6. Connect your smart device using its app (or though the printer interface).
7. Go back and re-enable the 5 GHz band.

Please let me know if you are able to get the printer connected or have further questions along the way. We want this working for you!