Thank you for your question. I had it translated into English, but must send you this response in English. Your question deals with the war in Heaven between God and the fallen angels. Let me assure you that Heaven is NOT closed down because of the fallen angels.
Throughout the Bible, the demons (fallen angels) are plainly too weak to resist the power of God.
1 John 3:8, God tells us that "The Son of God appeared for this purpose, to destroy the works of the devil." He did this through His sacrifice on the cross and the resurrection from the dead. Paul tells us in
Colossians 2:15, "When He had disarmed the rulers and authorities [demonic powers], He made a public display of them, having triumphed over them through Him."
This was all done in order to accomplish the prophecy given to Satan in
Genesis 3:15 - "I will put enmity between you [Satan] and the woman, and between your seed and her seed; He [Jesus] shall bruise you on the head, and you shall bruise him on the heel." Jesus Christ fulfilled this prophecy through His death and resurrection and as the conquering King delivers from Satan's power all those who come to Him through faith.
I trust this helps.