I have the exact same problem. Have tried a variety of things, including resetting Samsung Pay and deleting my VCO account and letting SPay create it. It creates the account, but no cards get added. I am on an S8 with Orel beta and 2.8.09 of SPay Quickpayportal
You can solve the problem by opening developer options in chrome and adding an API link. For API call, the correlation ID can be found in network log.
I’m also having the same problem with VISA I think there are many people like me having this issues it’s really annoying Please help
Bala Krishna ViOP Phone