Hi,
@Carol_Bureau1 , yeah, I think it's maybe just a touch of bad luck with two ratty sensors from a bad batch.
I've used maybe about 70 to 80 sensors now over 3 years, I've had about 3 or 4 pan out with the "sensor ended/retry in 10 mins" thing, and 2 of those were before I got blucon, and only 1 after. Haven't had any die for about a year now, using both blucon and now miaomiao.
I remember reading somewhere that when the 10 min retry message pops up, the main reason is to do with the sensor filament under the skin getting "noisy" amounts of glucose which it can't make sense of, and it's usually something to do with the filament moving about too much, getting bent, getting forced up against solid material which stops glucose getting to it, or it getting "biofouled", clagged up with ifg detritus, basically biological reasons which mess up the mechanics of it. Even "official" cgm like dexcom get that sort of stuff too.
I suppose it's possible that Ambrosia has "rewired" the more recent versions of blucon to make it more screwy, but I think it's more likely it's to do with the filament not playing nice or maybe you've just been unlucky enough to have gotten a couple of ratty sensors from a bad batch - I've read posts from dexcom users saying they've had 2 or 3 sensors in a row fail, so it might just be a manufacturing error in those two failed ones.
One thing I was worried about when I first started using blucon was, with it being higher than libre, the extra height might end "levering" the sensor out of place too much if I knocked it against a door jamb. That sort of thing could easily result in the filament being so displaced under the skin that it would start doing the 10 min retry noise thing and then die. So I ended up just being really careful about not bumping into door jambs! And taking coats, jumpers and rucksacks off...And seatbelts...And....
PS: you're so right about the accuracy! When these things are running well, properly calibrated on a good sensor, they are very tight - my current one has literally been about 0.1 to 0.4 off for the last few days - but then there's the random fliers too - swings and roundabouts!