Office 365 offer redemption

[RA82]

Apologies if I have posted in the wrong place or if I have missed the answers previously. 
I received 12 month office 365 with my new iPad but I am finding it almost impossible to redeem this offer as every site I seem to find is not the one required. Any help would be appreciated 

[O2Sunil]

Please use the O2 redemption code on https://o2.activate-code.com/

If you need futher help please follow the link https://www.o2.co.uk/termsandconditions/rewards/work-anywhere-bundle-offer-terms-and-conditions