Log in to your credit card account. Go to "Rewards & Benefits" bar and click it. Scroll down to "Rewards activity" and click on that. You will have a bar for "Previous Anniversary Periods." If you have earned the certificate, you will see "Congratulations" in that bar. Below the bar will be the benefit details and an icon for "Print your Companion Certificate." Click "Print your Companion Certificate" and you will be able to print out the certificate.