syncing

I have a new transmitter for my phantom 4 (new used) it started out with the charging led problem where once plugged in one led would blink a few times and then it would go dead. Refloated the solder around the relevant connections and it's now charging and behaving like it is supposed to...

I fly my Phantom using the DJI Go 4 software on either my iPhone or iPad. It doesn't seem as if my flights are synced between the two devices even if I use the manual sync command to attempt to do so. Is there a way to do that I'm missing?

I'm using Litchi to fly Way-point missions with my Phantom 4. The missions used to synchronize between the mission hub and my I-phone 6. This no longer happens. What happened and what must I do to fix this?

For the past 2 years my DJI Go app has been working very well on my iPad Mini (most recent model for the past year). In the last couple weeks the map has vanished. I'm at home and connected to Wi-fi. When I open the app and select Camera, the map in the corner remains gray and the scale changes...

Hi guys, I'm selling my controller and batteries as I crashed and lost my drone. Need to know. Can you sync a controller with another drone? Someone asked me this and I'm not sure. Are they only synced with the drone it ships with? Many thanks