Like box is empty untill reload

we use these tags
{SCOpenGraph image=<?php echo $profile->largeAvatar . '?_=' . time(); ?>}
{SCOpenGraph title=<?php echo $profile->name; ?>}
{SCOpenGraph description= something }

1 The share button works fine and popup with all the information, but the like button, show just white box, no images and no information - untill i reloade the page, then the information comes. the tags are defined in the code before the {JFBCLike href=<?php echo 'ourpage.comm' . JRoute::_('index.php?option=com_community&view=profile&userid=' . $profile->id) ?> layout=button_count show_faces=false share=true width=400 action=like colorscheme=light ref=homepage kid_directed_site=true} - This is on jomsocial profiles

2 When i make a test, directly from the page or by the facebook tool, the changes i make in the code is not viewable / working. I have to make a completely new jomsocial profile to test on each time, and the profiles i have used for test is set in some cache between the browser and facebook. - How do i clear those cache - undo the shares / likes ?
- Li