If I am an existing Cafeyn subscriber, can I still redeem this offer? 02 December 2019 09:17 No. You would need to use a different e-mail address when activating your Cafeyn/O2 offer! Related articles If I move to the O2 chargeable subscription will the catalogue stay the same? What does my subscription include? How do I cancel my O2 subscription to Cafeyn? What is Cafeyn? I'm having issues using the service. How can I contact you?