It shows up just fine for me.
Since the Thunderbolt is a Verizon phone, I'm assuming you're in the United States, correct? Is there anything about your Google account that might indicate it was being used in another country, such as where you initially set it up or the country you told Google you live in. To tell the truth, it's been so long since I've set up a Google account that I'm not even certain they ask that, but I think they do.
Just grasping at straws here.