Hi there, many thanks for the review and thank you for your time on the phone just now. Apologies for turning up early, we must have been running very ahead of time that day and we should have warned you. I am sorry that our engineer took a while to get the required part, we have been having issues with the queues at some merchants due to social distancing measures. Unfortunately we often need to come and have a look at the issue to give our own diagnosis and this was no exception. We have sent over our receipt this morning. We hope that you shall continue to use Polkadot in the future! Many thanks