The conclusion must be taken based on the terms and conditions that apply if Betfury includes this rule then they are on the right side free to do it
But on the contrary, if Betfury does not apply this rule, those who feel disadvantaged can submit complaints, although the Betfury team did not respond at least this would be a bad record and old users or new users can see it in the future. By the way this was not the first time I saw Betfury made a one-sided decision for example in affiliate cases.
Anything outside of the terms and conditions can't be determined unilaterally unless the team has to explain the details of the problem for the purpose of publicizing the reasons why the team should take that decision, but like you said if it's not open to unilateral action then that would add to a bad record so I think if that issue If it can be repaired then the team can use it to minimize problems caused to users.