Client rejected by Server

So I have a problem with my LoL client. I have just updated my client to the latest patch and as I was about to login it said that the Client has been rejected by the server. What do I do with this kind of problem?

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

Report as:
Offensive Spam Harassment Incorrect Board