There are 2 versions, but the information is the same on both of them.
There’s a preview in our user guide (here: VAT Returns Guide). This is the older version. The new version doesn’t have the colour and is spaced out a bit better.
Regarding the adjustments, these are only entered as negative/positive numbers. For example, -50.00 would adjust that boxes value down by 50.00. If the return was completely full of zeros, on reflection, it sounds like more of there being no data with the report. This can be downloaded prior to submitting the return by using the “Download Calculations” or “Export Data” buttons.