Welcome to the Q&A Forum

Mine gets buggy from time to time as well. When all else fails I usually swing on over to OSE and manually run a site to get the stats. But yes, uninstall, reinstall, clear cache. That should work but if not, sometimes I've even had to disable other addons I have enabled to get it to work. But as I stated, just jump over to OSE and manually run it and u should be happily on your way!