2 published complaints: 2 unresolved (2 no response).
McLuck (B-Two Operations) is one of the larger established sweepstakes platforms, and most players redeem without incident. It grades C on SweepsGuard. Its 2 formal complaints closed unresolved, and the pattern each time was the same: the operator acknowledged our approach and then never answered the question put to it.
McLuck has a substantial payout history and redemptions generally complete once verification is done. The cases mediated by SweepsGuard involve a locked account and a batch of rejected mail-in entries rather than a refusal to pay a verified balance. Complete verification early and keep records of what you send and when.
Yes, and the mail-in route credits Sweeps Coins. A SweepsGuard case on file concerns entries rejected against a rules document published after they were mailed. Keep a dated record of every envelope you send, and note which version of the sweepstakes rules was live on the day you mailed it.