1 published complaint: 1 unresolved (1 operator declined to engage).
SweepFan is graded D. The operator names itself, the rules are more complete than most sites in the category, and the support desk does reply, which is more than many manage. What it will not do is discuss a player account. Across 1 published complaint SweepFan explained its process in general terms and gave no account-level answer at all, including after saying it would look into the case and come back.
Sometimes, and then it can stop without warning. The published case involves a verified player who redeemed once and was paid, then had a second redemption returned to him marked failed with a note telling him to place it again. When he logged in to do that the account was closed. SweepFan told us that closed accounts are refunded their available balance and that the usual ground for a closure is requesting a redemption without meeting the one-time playthrough. Redeem as soon as you clear the hundred-coin minimum rather than letting a balance build, and keep every message support sends you about verification.