No. Currently, Web Hosting does not support upgrades.
You must enter the correct account ID and password that you have used when you have purchased the Web Hosting instance.
Make sure you have not changed the URL. If you have changed the URL, you must log out, and log in again.
The default port for MySQL database is 3306.
You have already bound too many domain names. You must delete the domain names that are not in use and try again.