I had to upgrade my 2015 MBP to Sierra the other day, in order to install TurboTax.
Since then, I’m only getting messages from iPhone users (on the laptop).
When I look at preferences, I had just my phone number turned on, but I am logged in to my iCloud account which is attached to a different email. Do I need to have that email turned on as well? A couple others show up in my preferences too, like my iCloud email, but I never use those so I unchecked them.
I just sent a couple of quick texts from the laptop and I saw them appear on my phone, but I have not gotten responses from the people I sent them to yet.