I also thought that I could access it again but because maybe it violated the existing rules, so I had to respect the available rules even though I had to lose some small money, it was purely my fault I also shouldn't have left my account let alone leave funds there, because maybe it will frozen in the future by the casino, so consider this a lesson for myself personally
May be such rules was created because there are a lof of users in casino and it is difficult to serve inactive accounts. May be because casino want that their users continue to play. But in all cases it is better to withdraw money from casino if you do not play in it.
It takes some time to activate your inactive account. Some times it takes a lot of time. I do not know about Cloudbet but it is a standart practice in all casino even if they have licences. They block accounts and then you have to wait unblocking. May be that is why people write here because they do not want to wait.