In order to ensure that the data in the profit feature is complete and accurate, please ensure that you have done the following 3 steps:
(i) Complete the MWS integration between seller central and seller central by clicking on the blue "connect now" button.
(ii) Correctly enter your cost of goods (COGs) for shipping and production costs within the sellics cost manager
These costs are not available within seller central and are therefore essential for an accurate depiction of your sales data.
NB. Please note that if you are already vat registered on Amazon, you do not need to enter VAT data in the cost manager
More details on this can be found in this free short video on Sellics University