Most people are having trouble logging in because they're trying to log in at peak hours.
For me due to my work and where I'm located I'm usually awake when most others are asleep and as a result rarely ever have login issues.

The best I can tell you though is wait until they open up the new servers, and the players start to shift.

I know it's not the answer you want, but unless you want to flip your sleep schedule I don't know what else to tell you.