Blank report - ghost town

I have this report that was slowly developed to a large model.

Data is all coming from Autodesk Data Connector

Today I checked it and the report was completely "blank"

Zero numbers, figures, complete ghost town. Check snip

I found this on the issued online report plus my desktop version when i refreshed data

I have tried:

• refreshing
• reissuing a report from autodesk and refreshing
• made sure there is no filters
• checked that the autodesk reports have indeed data and not blank
• checked if any errors came up on the model

The report was definitely fine as of this Monday or Tuesday when I last checked

Any ideas whats happening?