Specific to the Sony WH-CH710N headphones offer, I have noticed an ommision (well, sort of) on the 10 III product page.
Below the stock indication you have the box inviting customers to find out more about the headphones offer and how to claim it. If you click on this it then details how to go about this, including visiting 'https://www.xperiarewards.co.uk/'.
This link - for now - is wrong, as it seems the Xperia Rewards team have not updated their homepage to include the new offer. Instead at the time of writing there are two expired promotions related to the Sony L4 and 5 II but nothing else is listed.
If you need to claim for the headphones offer, a better link is https://www.xperiarewards.co.uk/X10headphones/ - you can find this link through the usual search engines.
I would hope that the Xperia Rewards team note this and update it soon, but in the meantime the second link should be recommended instead.
EE might want to update their product page so that it points to the correct offer.
