Company User

I am using the free on line version but as its for a company account. My boss is asking if we can get a cloud edition and sign up a support service with M System? or is there an email address I can write to aside the below I found as :

billing@manager.io.

Yes
See https://www.manager.io/cloud/pricing/

Support is via this forum

When you see such a reference, that refers to the system administrator for the forum itself, not a support service for using the accounting application.

Your first source of information on the program should always be the Guides: https://www.manager.io/guides.