Have you travelled on the GOBLIN in the last month?
Were you overcharged on a previous journey?
Have you resolved an unresolved journey?
If Paddington is your nominated home station, you pick up any refund due when tapping through there.
There's all sorts of refunds you might get, and since this development https://tfl.gov.uk/info-for/media/p...easier-to-top-up-oyster-cards-while-on-the-go you no longer need to 'nominate' a station: things get sent to every reader. If you're really interested, the call centre should be able to give you some kind of explanation.
Geoff Marshall (in his video yesterday about free travel on the GOBLIN) said, after he spoke to TFL, that if the system was having a "stressy day" the refund sometimes may only be applied when you tap in at your nominated station.
Source (at 9:50):
The website/app only has history for the last 8 weeks. After that point the data is anonymised so TfL can see that a journey was made, but not who made it. Even if you had travelled on the Goblin, 8th Sept would have been too early for a refund. I'm not 100% sure about the response Geoff talked about, I've seen a different one on a TfL tech forum which suggests that all Goblin refunds will be processed using the old method.Archway would be the closest but on that journey.
The oyster site / app do not go far back enough to see my history before that journey. (Is there a method to see a full history at all?)
I do not have a ‘home’ station as I live in Cheshire.