This is a very long and comprehensive review of Zettle, but particularly noticed this:
Quote:
You may have to repeat the Bluetooth pairing several times over a day if you’re not using the Zettle app actively.
Quote:
Several users complain about having to pair the card reader with the mobile app several times a day, implying the Bluetooth connection is not consistent.
https://www.mobiletransaction.org/izettle-review-uk/Not sure if that's my particular problem, because even if I don't repeat the pairing process it will eventually get back to reacting almost immediately, so although I think it's an issue with the connection between the app and the card reader, I'm not sure if repeating the pairing process helps, and obviously doing that several times a day is just too much fannying about, and really not feasible after a two-minute taxi run.