First, you can check if smarthome SSID on your modem was enable or not.
If it was enable, you also can check if the password for Smarthome SSID is same as your wifi. Usually, they are not the same password, so try to re-connect it.
By the way, what kind of modem you are using?
Also, did you use the Telus SmartHome app to add that device? after enable the smarthome SSID, you should add devices using Telus Smarthome app since there is a instruction for each kind of device in the app.