Just a note:
SolidCPConstantUser – Requires that you set the encrypted password for the account (we do recommend using Serveradmin).
To get this password the easy way would be to query the database. You can use the query below. Change [SolidCP] if you have a different database name
SELECT * FROM [SolidCP].[dbo].[Users] WHERE [Username] = ‘serveradmin’;