How can I get Go SMS Pro to sync with my contacts?

[AC Question]

Go SMS Pro blank Contact Pictures

I have been using Go SMS Pro for my texts for a while now but chose to uninstall and reinstall the program after some issues with my phone. After I reinstalled I now cannot get my contacts to sync with Go SMS so the pictures are just the blank default. I have gone into the settings but there isn't anything that I can check to sync them. Help?
I'm using a GS5 with Tmobile.