Tizen Galaxy Watch 3 iOS Issues

I have moved to a new iPhone 12 Max from Samsung.
I have decided to keep my Galaxy Watch 3, I find the round screen better than the Apple Watch.
I have installed the iOS version of Facer on my iPhone and installed the Tizen version on my Watch 3.
Now when I come to connect them both it asks me to “tap the screen 4 times to show my QR code” it doesn’t work, no matter how many times I try.
Is this a known fault, or am I doing something wrong?
Any help would be great thanks in advance Mark