I read the ad and also wondered immediately where this drone was purchased from. I think the seller might be happy to tell us the original source.
Dale Davis M.D.
Miami
I can only give you one well ment advise: DON'T!
There have been hundreds of pilots who have lost their drones flying over water at low altitudes.
As said before the sensors get confused and this effects the ability to maintain a steady flight...
When I press and hold the wifi button it takes me to the WiFi settings screen where turning on the WiFi button results in it turning itself off after a second or two, no errors at all so either way I try and turn on WiFi it just turns itself...