I have not flown my mavic 2 and quiet a while. So when I went to fly with the old DJI app it would not connect. I tried a couple other apps from the Android play store and can't get them to connect either. I'm sure there's something out there that I don't know about because I've been out of the picture for so long. And I don't want to have to pay for a subscription just to get it after work. I have a litchi app that I downloaded a long time ago, would that still work?