E-mail Issue

A while back we changed our home e-mail address to one through ATT. When I tried to change it here I never recieved the confirmation e-mail. After this the pages I could access were different and I could not post or add pics, etc.

Today on a whim I entered a Yahoo address I have. Instantly recieved the confirmation e-mail and back to normal. I changed again to ATT, and no confirmation recieved.....

Back in under the Yahoo address. No big deal really, but was not sure if this was some sort of bug, or if anyone else had similar problems.