Migrating data between 2 CRM

Hello,
Our CRM is hosted on Hostgator, and we got a new Hostgator account with new web address. And we want to have exactly same CRM in our new Hostgator, how do we migrate the all of the data we have to new CRM? I check the document in this forum but MySQL DUmp in CRM Admin tools giving an error.
Error : Failed to run external command. Check it is available and runnable by your PHP server user. Check also the command is not protected on shell level by a security layer like apparmor.

You might try the other dump function:

Hello,

You can backup database from phpmyadmin : https://www.hostgator.com/help/article/phpmyadmin
Or use the backup function : https://www.hostgator.com/help/article/how-to-download-and-restore-a-mysql-database-backup