VOLKER HANNEMANN WANTED! URGENT!

I am looking for my brother Volker Hannemann. He wrote: "It would be a relief to not have to fight every day to earn an income." I want to help him, that he at least can buy enough to eat.
For that purpose I need to send him a document urgently, which he has to sign.
But I do not have his new address. He lived in Miami, Florida. There is his company OVER ATLANTIC Inc. But he could not receive my letter. Maybe he is in California now.
Volker is about 2 m (6.5 ft) tall and very slim. His right arm is paralyzed and always hangs limp. Please help me! It is urgent! Who knows his new address?