Re: I cannot read my watsapp messages on my apple watch
Whatsapp does not yet have its own Apple Watch app, so the best you can get right now is notifications, which go right from your phone to the watch. Once Whatsapp makes an Apple Watch app (rumor has it they are working on it) then you will get more functionality.
I am a BBM user, and at first we were in the same situation, BUT finally a BBM watch app came out and now we can read and reply to BBM messages right on the watch. You can used a few canned replies, OR use the watch's mic to record (and then it transcribes) a message.