For those on this thread that are like me and wondering how to ‘update’ your Java version, here’s a cross link since I found it many many hours after finding this thread.
I too had no log details to go by and was scratching my head, excpet for these repetitive XHR requests to ‘my.openhab’ url’s. But no errors indicating that the MyOpenHABClient was doing anything. Well, the root cause were the SSL issues solved by getting the correct version of Java. Once updated it magically worked and I was able to see significantly more logging outputs, which now include MyOpenHABClient outputs.
I had already installed Java 1.8 on my Raspberry Pi using Raspian via apt-get and it resulted in version 1.8.0_65; which is still the latest version if you use apt-get update as of today (08/17/2016).
To get the latest that will work with my.openhab I finally found this thread over here!.
Using those instructions, you can get the latest Java 1.8.0_101 which is needed to solve the SSL issues for my.openhab.
It worked like a charm!