Firstly, you can head over to your online account at -

https://www.spree-card.com/DTESPR/Home/Login

Alternatively, you can download the Spree App and top up your card. The Spree App can be used for top-ups, viewing your statement, looking at any cashback that has been earned, and it can be used in emergencies. I.e., blocking a lost or stolen card.