I don't think your screen recording has anything to support what you've guessed to be the cause of the incident.
It looks like your drone descended under power (landed).
The recorded flight data is always the place to look to find what actually...
Your controller connects at home because you are within range of a wifi signal.
Not so in Florida
No .. as explained in post #6
Your drone doesn't care where you flew last.
You only need to log into your DJI account on the Internet every few months. It was just a coincidence that you needed to log in when you did - nothing to do with the change of location or the TFR.