I manage a popular site that utilizes this excellent plugin. However lately we have noticed a situation where we are unable to add comments to a post. The GPlus comment block shows up, you can post, but on page refresh, the gplus posts disappears. Seemingly the posts are never saved at Google for whatever reason and do not persist across pages refreshes.
Here is an example of a wordpress post that does not work:
However, some of the older wordpress posts do appear to work:
Anyone have any ideas on how to troubleshoot this. I have tried looking at the console in Google Chrome? I do not observe errors that would impact the proper functioning of this module.