How can we improve WHMCS?

In the email connector page, after you set the connector to "Microsoft," you lose the ability to tell WHMCS which Microsoft cloud to connect to for email accounts. We figured WHMCS would rely on the Autodiscover record, but it does not. It automatically looks for an email address on the office365.com cloud. There is a mandate for certain customers to move their tenants to the office365.us cloud and we need the ability to customize which cloud to query for the user and enterprise app registration. Ever though our emails reside on the office365.us cloud and the Autodiscover records points to that cloud, we can see in audit logs that WHMCS keeps querying the office365.com cloud. This means that you have it hard coded somewhere and we need it to be customizable.