Any ideas why this happened? I used to have more, 5 or even 7, but missed the moment when it reduced to 2.
Claiming from the faucet as well as redeeming Wheel of Fortune spins will negatively affect the ratio needed to maintain the base reward at $0.002 worth of sats. Your BTC balance also factors into whether your reward is reduced. I believe if you have over $100 worth in your account then you will have the normal base reward, but the requirement is lower depending on how much you've wagered.
If I understand you guys correctly, then I think the price of bitcoin also contribute to how much a player gets from both the faucet and wheel of fortune spins.
Like me for example, my base reward from the faucet has always been 2 sats, and that have not changed till now, so I am particularly not bothered about that, but for my wheel of fortune, amount of bitcoin I usually used to win as base reward was around 30-32 Satoshi, but right now, that has been reduced to between 26 and 27, and I suspect this reduction is due to the fact that bitcoin have increased in price.