I'm also using Chrome OS (on a Chromebook, OS version 46.0.2490.71 beta )
I noticed some flaky behavior tonight on the OBiTALK portal, when displaying those pages. Pressing Ctrl-H, then deleting everything except cookies, seems to fix it. I've also found that rebooting the OBi sometimes helps this symptom, when the OBi reconnects to the portal. Sometimes, the OBiTALK portal just starts going FUBAR on weekends, and recovers on Monday when somebody at Obihai waves a rubber chicken at it <restarts it>.
If you are curious, you can instead log into the device's local web server and view the same information. Press ***1 on your OBi-attached phone to hear the IP address to use.