Purchasing Problems There are some common problems you might run into while purchasing access. Purchasing While Studying AbroadIf you are attending a US-based institution, you can access your existing Cengage Unlimited subscription or purchase a new Cengage Unlimited subscription while living outside of the US. If you are attending a Canada-based institution, you can purchase materials for your course from Cengage while living outside of Canada. Purchasing With Financial AidTo find out how to purchase Cengage materials with financial aid, materials, contact your institution's bursar office. Purchased With the Wrong AccountWhen you purchase access for Cengage Infuse and sign in you see a message that you have not purchased access yet. Access Code Scratched OffThe access code on a physical access card is not readable after scratching off the film covering the code.