Q: Is it possible to change the primary IP address of my VPS?
A: No. It is not possible to change the primary IP address due to technical reasons.
Q: How many additional IPv4 address can I get for my VPS?
A: You get one IPv4 address with your VPS. Additional IPv4 addresses cannot be ordered.
Q: Can I transfer my account to another person/organisation?
A: An account is bound to one person/organisation. It cannot be transfered. But you can generate auth-codes for your services. With the auth-codes services can be transfered to another account.