Here's the online status page for the IB servers: https://www.interactivebrokers.com/en/software/systemStatus.php
FYI got booted from IB servers around 945am today and can't connect / login anymore. Rest of my internet is fine. Tried both my home wifi and mobile hotspot (cell), and same issues with both. Can't connect at all. IB status page says green/all is well, but that's often an unreliable indicator.
Talked to IB Tech Support, they said they've gotten a lot of reports today and are aware of the problem. No ETA for having it fixed, but working on it.