If you spend at least $400 in qualifying purchases using your registered AmEx Card at participating Oxford Properties Gift Cards guest services location(s) or through oxfordgiftcardplus.ca by Mar 9, 2023 and you can earn a one-time $40 statement credit. Only 10% cash back this time...
BTW, if you have a Scotiabank AmEx card, you can also try to register this offer: https://www.americanexpress.com/ca/en/network/shopping.html