Glimp has been reported to occasionally wreck Libre sensors, and this issue has been encountered a few times by members on this forum.
You can always try LibreLink for your Galaxy S7. It's the official Android app for use with the Freestyle Libre system and I have used it on about 4 sensors since getting my Galaxy S7 without issue.
I had to disable S Health as you've said, in order to use my phone with the sensor and avoid NFC conflict with S Health.
I find it unusual that your Glimp app is giving you warnings regards the Galaxy S7 NFC function being damaging to sensors. It seems to work perfectly with the official app and I'm yet to hear of any wrecked sensors through LibreLink with the S7 either.
Srill haven't had the bottle to try Glimp, I just can't risk the money on a ropey 3rd party app. I just hope I'm wrong in saying that, Glimp issues have all been repaired and sensors are no longer dying. But until I have that in writing, I'm not risking it