Period
At the top of report pages is a period selector (month, quarter, year). When you change the period, data is recalculated.
If the screen is empty—the first thing to check is usually the selected period: verify that it has data.
Multiple Legal Entities
If your company has several legal entities or objects, the active legal entity is switched in the top-right header.
Documents and reports are shown in the context of the active legal entity—switch it to see data from another object.