Hello,
I contact you because this is going to be 2 weeks that I do not play the premium servers of Minecraft it really gets me and as I play a lot on Minecraft on Competition on premium server so here I send you a screenshot when I'm trying to connect to a server on a premium server that tells me an error message, it writes me this: Failed to login: The authentication servers are currently down for maintenance.Mais good ceal lasts for a very long time and yet I Try on another pc under windows 10 which is not mine I tried to connect with my account on a premium servers and it worked so I do not know if on mac there is a problem or the kind. It does not work with version 1.8.8 for others I think its not synonymous

Here I hope you manage to fix the problem.

Sincerely Yanis, Happy Day