iwatch still getting messages when on `do not disturb`

For years my iwatch series 4 didn`t let messages get through when my iphone x was in `do not disturb` mode as they are mirrored which was great. But recently I am getting vibrations on my iwatch in the middle of the night (my family live in Texas). Their messages are precious to me so I don`t want to ask them not to send when it`s night here. And I wear my iwatch all night for sleep and heart data. So why is my iwatch doing this when it even has the `do not disturb` symbol on it`s face?

Also, this may be connected, the messages from whatsapp do not often ping or light up iphone screen anymore. The only way I know is through the vibration on my watch. All other apps such as messenger work fine. I hope someone can help