X is full of dummy account users that typically cheat most of the casino giveaways especially if casino giveaway organizers don’t pay attention on the quality of social media account of participants.
This is happening on many casino giveaways which is always swarmed by dummy account that only join with giveaway on different casino. I’m not sure how Metawin organizes their giveaway but it’s very hard to win against dummy account users with multiple account.
MetaWin team can use this website
https://twitteraudit.com/ to check audit score of X accounts. In the past, it is free but a latest time I checked one X account with it, I saw it is no longer unlimited free use. Only the first checking will be free.
It won't help to detect all farm accounts on X but can be one of useful tools to use and combine with other tools for checking, filter farm accounts to make sure the casino-hosted contests, events won't be abused easily by farms.
That's why I stopped trying. I tried many casino giveaways on X, but I never won anything. Too much crowd, like you and I am sure there are many "dummy" accounts involved, it's like a normal thing. All giveaways attract a lot of abusers.
I guess allowing only verified accounts to participate or using Twitter audit will work, but I always thought that these giveaways should be for players only, it doesn't have to be related to "minimum wagering in the past day/week/month", it can be related for people who have at least some rank, or in this case only for people who have $MWIN Points, for example, a minimum of 5-10k. In that case, the prize would go to someone who actually plays in the casino.