I use a different monitor, but Apple health syncs with both MySugr, which I use for my everyday monitoring, and the app which came with the Glucorx monitor to collect the bluetooth data (but is a bit rubbish for daily use, compared with MySugr.) In fact that is how the data goes into MySugr, via apple health.
Look at the apps in your profile in apple health and make sure they are set to read and/or write according to your needs. So the Glucorx writes and the MySugr reads, in my case. You may also need to go into the settings in your monitoring app to do the same permissions thing to share data with apple health.