Thank you @lovelymusictube1 for your concern.

However, based on our review, there is no indication of cheating in Steem-Bingo.

Each of the accounts in question — @freisein, @upv4life, and @honolulu — purchased 5 bingo tickets using 5 STEEM from their respective wallets. As long as an account pays for its entries, we do not restrict participation. At this point, we cannot deny any valid Steem account from playing.

In this case, they happened to be lucky and won 2 out of the 4 available prizes — that's the nature of chance-based games.

Also, for clarity:
There is no limit on how many bingo tickets a user can purchase.
However, an account can receive a maximum 100% upvote from the Steem-Bingo trail, which is applied to the first 5 tickets only. Even if someone buys 10 tickets, their upvote benefit is capped.

We will continue monitoring the system for fairness and transparency, and if changes are needed in the future to limit multi-account participation, we’ll consider implementing them.