Hello again.
I wanted to inform you that, as announced by winz.io on CG, all amounts due have been refunded.
I would like to thank the forum members for expressing their opinion in this post, because the casino representative was certainly also following this thread and both the topic on CG and here on bitcointalk made the casino reflect.
I think that without you we would not have been able to resolve this matter positively.
Thanks again

Regards!