Does it finish syncing (the red number in the upper right of activity) and still not show everything? I'm wondering if there's a difference in the node you're connecting to.
Update - it looks like one of the servers was missing the follow_api, which was causing differences in responses. I've updated steemstats to ONLY use one server (that's working) until I can get this resolved. Let me know if it's working better or not for you.
Seems to be working better now. Thanks for all your efforts.