After a long wait I spoke to an Abbot rep whose solution was to send a new sensor and a reader which would arrive in 3 - 4 days. I was furious and was possibly not very friendly with my response to this solution. However when I stopped pacing up and down it suddenly dawned on me that I have my old reader in a drawer and a new sensor - job done until the app is updated. Why have Abbot not advised customers to seek out and re-charge their old reader - at least you can monitor without finger pricking!