Need help with Tuya Smart integration with Local Tuya

I am using the Tuya Smart App instead of the Smart Life app. I have currently 3 devics added to the app and fully functional with scenes.
I am trying to integrate the Local Tuya Cloud platform with it, and while scanning it will scan the QR code, but wont add any devices to the portal.
I am in the US, and i have chosen Western America for Data center. I prefer the Tuya Smart App cos i can never get devices to add into Smart Life APp.