As I pointed out a month ago, it is not broken, it is deliberately taken offline every time the price of FUN drops too low.
The reason that the WOF spins have worked this week for a couple of days is because the price of the FUN rose suddenly to 7 Sats for a few hours at a time, which (not) coincidentally caused people like me to get offered their daily WOF spins.
I do believe the WOF are being withheld intentionally and it is not a bug. Your theory about there being a price which triggers a pause in spins being credited is interesting but I think there is more to it. The FUN/BTC price was higher in early September, rounded to 7 sats on the site, and there was no spins credited on those days. In the final days of September they did begin crediting spins again, coinciding with a small increase, but when the price went back down to 6 sats they still continued crediting spins for a few more days.