After watching this video you might think that 1xBit refunds winning bets, but keeps loosing bet.

This statement is easily denied by the winning bet right at the start of the video.
In addition, these refunded bets were placed on the known outcome, which was already stated by the support team.
Those lost bets were cancelled and refunded due to the same reason - no one would place a loosing bet on a known outcome. His withdrawals he didn't show for some reason.

It's obvious that the player tries to delude and tarnish 1xBit, which is seen by the time of his bets. He uses small markets and leagues, so it would be harder to track violation, but there is still information on web, for example: https://tennis-score.pro/games/yaroslav-tkachenko-ukr-evgeniy-skorobogatyy-ukr-setka-kap-2021-06-13-09-45/

Thus, his bets were refunded and account got limited to prevent such activity.