Do you have more sales than what's being reported on your Sales Dashboard?
The reason behind this is the Sales Dashboard is linked up with your Stripe account and will only report the currency you have set in Stripe.
For example, my Stripe account is set for USD currency. I sell offers in USD and CAD currency. I sold a $1,000 USD offer and a $1,264.75 offer in CAD. Since my Stripe currency is set to USD, the Sales Dashboard in Kajabi will only show $1,000 USD (don't worry, the CAD offer you sold will still be in Stripe).