If you have managed to bugger up the original by damaging the locking tang(s): you can still avoid a glue-fest by buying a new front housing (link below).
Some types of glue give off heavy fumes and with plastic "glass" (set into the front of...
It's just the equivalent of a lens hood, there's no glass in either that one or the mini 3 pro version. Without it you will get more lens flare. Before you gum things up with blobs of glue: get a magnifying glass and check out the four locking...
There's only ONE DJI Fly app !!
The 2 DJI GO apps are NOT compatible with the DJI Mini.
Here's a more specific Link:
https://www.dji.com/nl/downloads/djiapp/dji-fly
In my opinion there's something wrong with your smart controller.
What you described is like disconnecting the USB cabel between a standard controller and a smart device (phone).
You still had full control over the drone because the wireless...