The "manage my watches with NumberSync" page only displays my primary line, not my secondary.
I am trying to NumberSync my secondary line with my new Galaxy Watch 3. I have followed all the steps to NumberSync and when it opens this page only my primary line is displayed to select. I have two Galaxy Watch 3's and two phones. I was successfully able to pair and NumberSync my first watch with my Samsung Galaxy S10+. The second watch is bluetooth paired with my Razer Phone 2 and connected to my AT&T account but when I try to NumberSync it only offers the S10+. Is it not possible to NumberSync a Galaxy Watch with a non-Galaxy phone?