No sync of faces on Fossil

I had this running for months until I connected my new IPhone to the Fossil. Before it was iPhone 7.
Due to naming conventions in the company, both phones had the same name (don’t know if that matters).
So not getting any connection to the new iPhone I made a reset on the Fossil. At least since that moment I’m not able to send Facer watchfaces to the watch. I have connection and can select between the „Standard“ watchfaces, I get temperature, steps, etc…

Any ideas? Do i need the QR-Code? Don’t remember…

Many thanks.