I have the same issue. escalated twice. The escalation manager just told me there is nothing they can do. Such a shame! Why Rogers is selling the watch plan once it does not work!
I have purchased 2 galaxy watches from Rogers store with plans and none of them work on LTE. I cannot make any outbound calls if my phone is not near by. I have been sent back from Store to Tech support and from Tech support to the store several time...