Just as I feared, changing to a new sensor caused a nightmare! Immediately the 60 minute warmup finished and the sensor started working, it soon showed signal loss and loss of alarms! The only way to get a reading was to scan. Next the signal loss alarm kept going off and I could not get Shuggah to connect to the new sensor. It keept saying ‘scan successful’, then just said, ‘scanning’ and never changed to ‘connected’. Next, I tried deleting the Libre app, which was the new version, and had been working perfectly with my old sensor! I then reloaded the Libre app from my purchases as instructed, but that soon showed signal loss and I was back to square one! Worst of all, after deleting both Libre and Shuggah, and then reloading Libre, it still would not work other than with a scan of the sensor. Currently I have only Shuggah, having loaded it after deleting Libre again, and it is working perfectly. When you download Shuggah and go through the installation, you do get a warning that Bluetooth access for Libre must be denied. Yesterday with the old sensor I did not deny Libre access and yet both Libre and Shuggah worked fine. I have downloaded Libre again and denied Bluetooth access, but of course this just means the app doesn’t work! I’m now very confused and facing a call to Abbott, which I doubt will be of any use, and of course you cannot call until Monday! At least for the moment I just have Shuggah and it’s doing everything I need it to do. However, you can’t just carry on in this situation because at some point, you need Libre in order to fulfil NHS requirements and have data uploaded to LibreView! Anyone else on here in this situation with a new sensor and have any ideas?