Majestic_Clorox

Hello, I recently changed my MC name, and added an underscore to it. After about 20 minutes, I went to the technic launcher, and of course opened it. It was all normal, perfectly fine. I tried to log in, invalid. I tried again. Retyped it all. I checked if I could sign into normal minecraft, and yup, I can. I tried to exit the launcher, and relaunched it. Saddly, same thing. Did I miss a post about underscores or something? Is there a reason I can't log in?