I have 2 Magento issues that need sorting.
ISSUE 1 - Paypal error on some orders = "PayPal gateway has rejected request. Payment has already been made for this InvoiceID xxxxxx Duplicate Invoice"
ISSUE 2 - successful orders are doubling up/duplicating in the Magento admin. Need to stop this.
Please only help if you know what to do. :)
7 freelancers are bidding on average $41 for this job
I have more than 8 years experience of Web Design and Development. Your Invitation over a private chat would be highly appreciated, I will share my previous work.