Account report does not show any data (Data Center)

Problem

I've linked Spaces to Tempo Accounts, but the Account report does not display any data. What do I do?

Solution

Only linking an Account to a Space will not set the Account custom field on existing work items. It only means that any work item in this Space can be credited to a specific Account [available from the list of linked Accounts], and this is done by setting the desired Account in the Account Custom field in the work item View.

This article explains, step-by-step, how to link Accounts to work items.