I see this thread has no further activity with no solution. I have the exact problem, and I do mean exact. Ever since I bough the 200 last week. At first it worked but then it stopped, I deleted the account and started over and it worked then it didn't, I have tried every thing I can find on the web and here and NOTHING WORKS, no incoming ring. Reset the Obii, deleted the account, checked and unchecked chat, reset up the account. It just plane doesn't work. Im ready to send it back to amazon and get a paid service.
Maybe it was a bad batch of Obii 200s from Amazon, I don't care, it doesn't work. I used the 100 for years without problems.