Did you read the last 10 posts?
No.
Exactly I don't understand that much about Ethereum, but I havent researched it much.
Where can I find information about this Ethereum company in Switzerland, which controls this project?
People have invested in this company, received what? Units / Shares? (Ether?)
31,000 BTC got invested in this company as far as I know, right?
Is Ether to be understood rather as coin or (network) token?
How much money was collected with the ether-sale?
How much ether is there in total?