I have Railcard. Right now, Travelling from Orpington to west India quay changing at Lewisham. I left Orpington and tapped in there. I stupidly have just tapped on the DLR at Lewisham. It's charged me £3.85. I'm now on the DLR to west India quay. Should I tap there, which I know will make it an unfinished trip (I don't know what time I'm next travelling on anything yet) to make it easier to explain to oyster phone line? I wanted to pay £2.10 for the whole journey and realised I would be doing , had I not tapped at Lewisham. I was confused as couldn't see a pink reader which I was expecting.