Hello we installed hreview a week ago. Normally when we release a new review its in Google within a couple of days. We redid our reviews with your plugin eg http://www.radleycollector.com/radley-streets-of-london/ already was ranked first in Google , we just wanted to add the stars to it. Since adding he plugin its totally disappeared from Google. Not on there even when we type the product name and our business name.
We used the Google checker to see what errors as you suggest and the only error that comes back is:
Warning: At least one field must be set for HatomEntry.
Warning: Missing required field "entry-title".
Warning: Missing required field "updated".
Warning: Missing required hCard "author".
Can you tell us why this would ruin our ranks so quickly and for what reason? Its done it for all we have added the review to that's been indexed since.