If you run a report, and it says "There is no data to display", the most likely reason is that the default filter options do not match the available data in your Project.
E.g. For a project report, the default filters are "Due Date falls within the next 90 days" and "Project Status is Active". This means you'll only be seeing upcoming, live projects. If you wanted to look at something retrospectively, like the Invoice total for all projects completed last month, you would need to remove those filters and add your own.
Each report has these default filters, but these can be changed to better capture the information you'd be looking for. We have a lot of available filters that you can use to customise the perspective with which you review your data.
If you’ve tried to create a report and you don’t immediately see the data you think you should be seeing, check that the default filters haven't excluded anything.