~snip~
Most of the negative ratings are related to the multiply BTC game. The users are complaining that the hi-lo game is unfair. Seems like people are leaving negative feedback on Trustpilot after losing their account balance in the hi-lo game. Some people have mentioned that they have lost most of their bets and getting longer losing streak. Maybe they are ignoring the 5% house edge of the multiply BTC game of Freebitco.
Some people also complained that their account was blocked without any reason. But it only happens if anyone creates multiple accounts or use bots to claim the faucet.
Probably those people saw videos on youtube from referrals hunters promising safe income by playing the multiplier game on automatic mode. Those videos have always been very popular, with many falling for them. Actually, they should blame the scammers who promise that is a money making method instead of blaming the platform. I can really feel on those comments the anger for losing money they didn't expect to lose, due to believing it was a "safe bet".