If you cant go 90 feet up then you have either a faulty drone or controller i would be raising a support ticket and getting it replaced.
Not in beginner mode...I'm trying to downgrade to an earlier firmware for the heck of it, can't get the DJI Assistant software to cooperate...did the firmware updates via the app, so, yes, I'd be surprised if this isn't some sort of hardware problem.
This is a dumb question and I'm sure it's not the issue, but did you check you max altitude range? Also, sometimes turning wifi off your phone or tablet can help with transmission. One more thing, are you flying in urban area? Even still 90 feet is nothing. Yesterday I flew in urban area with lots of trees and many many homes and flew 1,320 feet. Not sure if that's great or just ok.... but when I drive to the top of open parking garages in urban areas to fly, I can fly until the battery becomes an issue... I'm not 100% proficient yet on my mavic though...
I noticed that too. Whenever there are trees near where I operate the RC, I tend to get one/zero bars of transmission strength at 400-500 meters (apologies for using metric units) from the Mavic. With just a few trees around, I am able to fly up to 1500 meters. I live in a city where it's impossible to get away entirely from both trees and buildings, unless I fly out into the sea. Even so, the farthest I was able to get out to sea was 2000 meters.
