One complaint is on record against WinBonanza. A player from Oregon reported a $50 balance held behind an unresolved account verification. WinBonanza replied to SweepsGuard mediation but declined to discuss the account, citing its privacy policy regarding customer information, and did not engage with the substance of the dispute. The case closed unresolved. Outcomes: one unresolved (operator declined to engage).
WinBonanza is a newer platform with a strong operator pedigree and, so far, only one complaint on record. That complaint is a mark against it: asked to mediate a $50 verification hold, the operator declined to engage and cited its privacy policy. That is a small sum but a meaningful signal, and SweepsGuard is monitoring whether it reflects a pattern.
On the one case we have taken to them, they replied but refused to discuss the account, citing privacy. Most operators in this space engage with SweepsGuard on a player's behalf, so this stands out. If you have an unresolved WinBonanza issue, file a complaint and we will keep testing whether this was a one-off.