@Neil D have you tried using an alternative app to scan your Libre?
I have used Glimp and now use xDrip. They are unofficial apps but I prefer them as they allow use to calibrate the sensor. It is all very well saying that the sensors are factory calibrated but I don't seem to be the same as the "standard factory man" so using the official app is very inaccurate.
The downside is that these unofficial apps do not integrate with the systems that my diabetes team uses. They are ok with this as they do not need regular updates - they trust me to use the data appropriately.
I have used Glimp and now use xDrip. They are unofficial apps but I prefer them as they allow use to calibrate the sensor. It is all very well saying that the sensors are factory calibrated but I don't seem to be the same as the "standard factory man" so using the official app is very inaccurate.
The downside is that these unofficial apps do not integrate with the systems that my diabetes team uses. They are ok with this as they do not need regular updates - they trust me to use the data appropriately.