Thank you Stephen for your quick answer, i give it to the odoo support team. They akst me about a cotract number. I didn't habe something like that. When i subscribe the solution, the banner with the information to subscribe was closed and nothing else goes on. First i Need only the free version, because only 2 people works with it. I'm a little bit confused because i thougt that i got a confirmation mail or something else. What's the mistake? Where can i find the contract number?

They are asking for your paid support contract number. Did you explain you are using the free 2 user version? Tell them what happen and what you need.

Hello Ralf, If you are not paying, then you do not have any contract. So, you do not have any support. Please check the pricing page of odoo.