Recorded Sales Discrepancy

I have a question about the data we’re getting in Google Analytics while using your plugin, “WooCommerce Google Analytics Integration.” The number of sales shown in our Google Analytics is less than the number of sales recorded in our store. Is there a way to fix this so we can have accurate numbers? We’re trying to make marketing decisions and we can’t tell where some of our sales are coming from. Thank you for your help!

Here’s the reporting discrepancy:

Last month – 153 sales in WooCommerce, 139 in Google Analytics
Previous month – 139 sales in Woocommerce, 123 in Google Analytics