Please know that Wholesale Inspector has its own support desk. You can email them at firstname.lastname@example.org for tech issues.
Now, when you are uploading a supplier file to Wholesale Inspector, you have a few mandatory columns, and you have bring in some optional columns.
You must include the following columns:
1) UPC, EAN, or ASIN (required)
2) Cost (required)
3) Supplier SKU (required)
4) Supplier Title (required)
You can then add a few custom columns by mapping those columns to the custom columns:
5) Custom 1
6) Custom 2
7) Custom 3
Some examples of custom columns you might want to bring into the results? MAP pricing, Quantities available, any Online Restrictions, etc.
If you are not a current user of Wholesale Inspector, you can get a free trial at https://WholesaleInspector.com