Have you seen my previous post: Reach integration with Pixhawk Issues - #4 by rrr6399
It looks like the altitude datum reference and GPS status issues are still there.
Also, I don’t like the approach of not showing any data until its determined that the GPS antenna is in an open area. I do a lot of testing indoors to test communication and such and its nice to see the status of the GPS using the web interface during testing. It also keeps users in the dark until the conditions are met.