點解用手表登記android pay 永遠都收唔到SMS

Huawei watch 2
我想用tap & go 張卡申請 Android pay..
登記極都收唔到SMS認證..
以為tap & go 唔support, 搵部nexus 來試, 又收到.
用返我本身部redmi note 3, 又收到.
再試huawei watch, 都係唔得... 點解呢.