A small number of customers continue to report issues using the Three (UK) network on their card payment terminals. This can be resolved by manually selecting an alternative network.
We recommend all customers with POS terminals should proactively do this in order to prevent problems if your terminal roams onto the Three network.
Please follow the instructions here.
We recommend connecting to O2 or Vodafone. Do not connect to EE or Three UK.
Thank you and apologies for the inconvenience...