I'm experiencing the same thing. At first I thought it was my internet, but I have no troubles browsing on other sites, etc. Not exactly sure whats going on. I've gotten login error 2023 and 2025, and my browser can't open the riftgame.com website. Extremely frustrating because I can't even contact support nor can I see if the servers are down.
If anyone else is experiencing this, or knows what is going on, please leave a comment.