Back when I converted to the new blogger interface, I went ahead and decided to switch my blogger profile for my Google+ profile. This, I guess, was a HUGE mistake. Somehow, everything worked fine for the longest time, then BOOM!!!! Rockets went off, and my email was dropped off the face of the planet.
So, the solution to this issue: In the mew blogger interface, there's a drop-down menu with a cog symbol on it. Select that drop-down menu, and click the button that says "Convert back to Blogger Profile" or something like that. Follow all of the steps for getting that set up... It's kind of time consuming. Now, here's the kicker: make sure you click the unassuming little check box that adds your email address to your profile. This is what solves the whole entire issue. I'm sure there's some way to fix this in Google+, but given my level of frustration... I settled for simplicity.
So, I'm now back in the commenting game. If you quit replying to my comments, please know that you can start again. Sorry for the interruption.
What pressing Blogger issues have you had? It's amazing the strange things that happen, and the not so obvious solutions to those issues!