Text Message Forwarding confirm code won't show up in Mac
I'm trying to setup Text Message Forwarding between my iPhone 6 and MBP (mid 2011). Both Mac and iPhone are in the same network and using same iCloud account, but when I try to enable it on the iPhone it asks me to enter a code that's shown on the Mac, but nothing shown there. I've read many threads here and over the the internet, no chance :(. Should my number appear in the Mac's iMessage app? it only shows my emails registered to send/receive iMessages.
MacBook Pro, OS X Yosemite (10.10), iPhone 6. iPod Nano 2nd Generation