Can I exchange my unused OMPT products with other OMPT type products? January 25, 2022 15:30 Updated Yes, you can exchange it with other product on the same or lower price. If the product price is higher, you should pay the price difference. Please contact OMPT support to request the exchange. Related articles Why I can't find the practice material or a bundle in my webshop? How long can I use my purchased OMPT products? Which OMPT test equivalent to Dutch Wiskunde A/B/C/D? Can I get a refund? How many attempts do I get?