By my estimate the challenges page currently loses roughly 30% of all multiplier rolls, it takes 15,500 rolls before the challenges page records 10,000 rolls.
Furthermore, however many rolls you do is not counted right away, but roughly an hour later.
But it doesn't stop there, i.e. the challenges page also doesn't count all the bonus stars you accumulate.
Faucet claims frequently do not give the 3 bonus tokens and so on and so on.

This is a VERY old problem, happens every time the server hasn't been restarted for a given amount of time.
The problem increases, meaning the challenges page will lose more and more rolls and the delay before the challenges page counts them will become longer, the longer the server remains without restart.
Sooner or later (unless it gets restarted earlier) the challenges page will not count any multiplier rolls anymore, not long after that the entire site including all the faucet pages will go down.
A day or two after that they will notice, restart the server and from there on for a week or two things will be back to normal, until the whole problem starts over.

The big problem in this is, they do not have any support at all, they simply don't read their email, meaning you can't even let them know when it's time to restart their server.
I actually had the idea, if I sent a mail to mellowads (that's owned by the same people and connected to the coinpot faucets) and told them I ment to put a paid ad on mellowads, but not unless they fix their faucets, maybe that could get their attention, but then I guess chances for that to succeed are smaller than the efford would justify.