Message sync issue with iphone 6plus and macbook pro running yosemite

I have an Iphone 6plus and since a little while I can't seem to be able to sync properly my sms/text message to match both the iphone and macbook pro.

I am running on my macbook pro yosemite and iOS 8.3 on my iphone 6 plus.

I have entered my apple id account into preferences and I have authorized my iphone with the six digit number code to share the message and still have no success.

Can someone know how to fix this annyoing issue,

Thanks