Lately, too many issues raised without being properly resolved, and after waiting over 80 days on some of them, my patience is running out. Even communication has changed significantly. Where my VIP host used to respond within minutes, messages are now ignored entirely, despite i've always been nice and never been hostile or anything to them.
Issue 1: Plinko odds / probability model
Between Dec 17, 2025 and Mar 10, 2026, Winna Plinko used altered probability tables instead of a standard binomial distribution, significantly reducing the chance of hitting top multipliers while reducing RTP to around ~98%, despite originals being advertised at 99% RTP.
For me, this resulted in ~22,768 High Risk (16-row) bets with an estimated missed value of around $4,366. Had I known the actual probability model differed, I would not have played Plinko there and would have chosen another casino instead.
I had a similar issue last year on Rainbet Dice involving a much larger amount, and Rainbet investigated and fully compensated me within 2 days.
In this case, Winna support confirmed the issue was forwarded to the tech team, but after 80+ days there is still no meaningful update. They only request me to be patient.
Update: Bennett denies that plinko was advertised as 99% RTP and claims that Plinko was advertised as 98% RTP during that period. However, that directly contradicts the facts: Winna themselves sent out an email acknowledging that an error had caused the RTP to be lower than intended and the other co-owner (Paul) publicly admitted the issue as well. They also compensated some of the larger players while smaller players like myself were left behind.
Estimated Loss: 4,4K usd
More detailed info here: https://www.ltccasino.io/blog/winna-plinko-odds-rigged/
Issue 2: Missing nonces / provably fair history
While checking Winnas provably fair system, I noticed a large range of nonces missing from my casino history. According to the checker, nonce 81863 would have resulted in a 1000x hit.
The provably fair seed is shared across original games, but during this period I only played Plinko.
The last visible bet in my history is nonce 80433, followed by the next visible one at nonce 84534, leaving a large unexplained gap. There are no other games / originals inbetween. It straight up jumps 4K nonces!
I requested the specific betslip tied to the 1000X, but after 80 days it still hasnt been provided. Im repeatedly told to be patient, but there is still no resolution or data shared.
Estimated loss: 10K uSD
Issue 3: Spring Slot Selection promo
The outcome of the Spring Slot Selection promo on Winna is not correct.
Winna claims there were 161 valid 1000x winners, but this does not match publicly available data. Based on checks of the Luckiest Wins pages on winna.com, as well as other publicly available sources (including the top multipliers on the selected slots available on fairgambling.com), there were only 18 true 1000x base-spin wins that meet the stated conditions (all public available data sources match eachother perfectly).
After users questioned the discrepancy (161 winners versus only 18 listed) once the promotion had already ended, the terms and conditions were updated to state that the 25,000 prize pool was shared across multiple casinos. However, Winna has refused to disclose which other casinos allegedly participated in the promotion. This explanation is also difficult to believe, given that the eligible games came from multiple providers, including Slotmill, Hacksaw Gaming, and Booming Games,... . It seems highly unlikely that several independent game providers would coordinate a single promotion spanning multiple casinos without any transparency about the participating operators.
Estimated loss 1,2K usd
End note:
At this point, I may be burning bridges with Winna by posting this, but I still hope they will do the right thing and correct these issues. After 80 days without a clear resolution, Im starting to think I may have been naïve in expecting one, and it feels more important now to at least make others aware.
Bennett has replied very briefly to my issues after weeks of trying, about 1 month ago. But his response just doesn't align with the available facts. Since then i've been completely ignored.
Bennett response:
