OK, I won't even start the rumor, then. :-D Half the time, I am misreading. Hoping Sage 100's program is not like Sage 50's program, as John said. see below from the KB. Tried to bold the main points.
Option II: I **purchased Office 365 through a 3rd party company, not Sage**, and I want to get started using the Sage 50 Integration with Office 365.
Please Note: You must have Office 365 Business Premium in order to use the Integration with Sage 50c.
1.-5.
**6.Next, click View and Accept Invitation to accept the Microsoft Cloud Solution Provider Invitation.
7.Click Sign in to view and accept the invitation.
8.Click the Check box Yes, I have read and understand the terms of delegated administration and I am authorized to agree to these terms on behalf of my organization.
9.Click the Authorize CSP button to allow Sage to become your CSP.
10.-16.