To remove your UltraQ control from the app, select Logout of ShareMyCook from the main menu in the application. Then select Disconnect from Bluetooth.
This will remove the association between that particular control with your Share My Cook account and it will remove the Bluetooth connection between the control and your mobile device.
From the main dashboard in the BBQ Guru app, touch the TAP TO ADD text at the top. Connect the UltraQ to your mobile device via Bluetooth as prompted by the app. Once connected select Connect to WiFi and follow the prompts to login to your existing or a new ShareMyCook account and select your network accordingly.