Though I had to manually put the serial and model number because, for some reason, the QR scanner doesn't pickup the code while scanning from the Members App. I tried it on the Camera app and it scans it fine.
Hi, we suggest you to delete the registered product from your Samsung account and register it again.
Then We kindly request you to follow below steps to find bud feature. https://www.samsung.com/ca/support/mobile-devices/find-your-samsung-galaxy-devices/