RADS Error and Server Connections Issues
I know a lot of people have been having this problem, and half an hour ago I wasn't one of those people. Half an hour ago I was able to launch the client, but I was unable to log in (kept getting the whole attempt 1, 2, 3 unable to connect to server thing). It would be great if this could be sorted out as soon as possible (or at least get an update from riot about the issue). I know it isn't on my end because of two things. 1. Other people are having the same issue. 2. I was able to connect and play games just fine last night and nothing has changed on my end in between last night and now. So don't tell me that I need to fix or change something.
[EDIT] Someone on a different post about this issue said that they disconnected their router and then in 10-20 minutes and were then able to log back on. They also received their mystery gift at this time, so if you are having this issue and have not yet received your mystery gift (I have not yet received mine) it is possible that the mystery gift is the cause of the issue.
[EDIT2] Riot is now working to fix the issue.

