First addition, then division
Answer:
You can try emailing tech support and describing your issue. In order to get the best help as quickly as possible, try providing screenshots of what happens when you sign in or describe everything you see on the screen when the problem occurs, and quote error messages directly when possible.
Answer:
Elastic IP address
Explanation:
Elastic IP addresses are static, persistent public IP addresses which can be associated and disassociated with the instance, as required.
This will provide the best failover solution that will keep same IP address on a new instance.