It isn't "broken" but just disabled, as it was indeed slow as there are too many servers (Still worked but could take 5 seconds for it to record your kills etc.). Therefore there were 2 solutions, updating it or going for GameME.
That is basically what it is looked at.
It is "broken". I am quite aware of the problems you are having because we used Hlstats at first, and half the data was being lost at only 40 servers, which is what is happening to you. If it takes 5 seconds to record 1 thing, your server won't keep the backlogged data forever.
Just to save you the trouble, Lotus was losing data at GameMe at around 100 servers and then switched to hlstats just to realize it was even worse there.
If it was possible to just use hlstats, why would I bother spending so much time making our own stats website from scratch?
But I do wish you best of luck in trying to optimize it or paying GameMe $170/month to have the same problem, but I guess you can afford it due to the cheaper servers used.
Blackwonder also has those, like Rocket Pit (Look it up, it's fun.. except no one plays it). It used to have something like Smash, but that died out after some time.
If no one plays it, is it really worth mentioning?
Here at Skial we've been pioneers in more ways than any other community out there. I made achievement_idle_awesomebox, the most popular custom map after orange which you are using on your servers. We made the 2nd trade server in TF2, when no one else thought it would be worth having because servers back then cost at least $30/month so we couldn't just spam hundreds of servers like your community is doing now. We made one of the first Jailbreak and Deathrun plugins for TF2. We have dozens of Saxton and Deathrun maps made in our name. We have our own afk manager, autobalance, and ranking system. We have dozens of private plugins that fix exploits, lower lag, deal with griefers, and even stop servers from crashing.... stuff that people would never realize that we have, but is reflected in us having the vast majority of top TF2 servers. We've also helped the TF2 community by releasing public plugins that are used by hundreds of other servers besides us.
To say that your community is remotely comparable to us in custom plugins and maps by saying that you guys made 1 game mode that no one plays, is kind of a stretch.