Companion app will not synch watch faces to gear s3

I have a Samsung galaxy s9+ and the companion app will not synch watch faces to my gear s3. I’ve uninstalled and reinstalled. I’ve factory reset. Any suggestions? I have no problems synching a watch face from the watch but that is just unpractical as it’s just refreshing until I find one I like.

Hi. Sorry I cannot contribute to answering your question but how did you manage to install the companion app? Which country are you located?
Because I have an S8 and cannot install the companion app.