There is a way I figured out how to temporary fix it. First, in the login screen click on the modify serial code for the multi-player (be sure to input your serial code before attempt any login). Then try to input your serial code with different combination of capital letters for your serial code. For example, 4r8K-9R7u just mixed up the capital letter combination a bit and should work fine.

When is patch 1.2 going to come.... Day one impression svcks lol