Welcome to the forum from Chicago the Windy City. Besides this forum you can get help with issues and information by clicking on Mavic Help and Mavic tips. Let your fingers do the walking. And also, a caution about using RTH, good to fully understand how the RTH feature works. There are many possible scenarios that could occur when RTH is initiated. Please carefully review the RTH section of your DJI manual so you fully understand what to expect. The RTH feature is one of the most complex features of a DJI drone.
While it works very well, and rarely fails, it can do unexpected things if your not sure how its supposed to work. Maybe you already checked it out, trying to save you some headaches in the future. There are four very important bullet points, which you should know about. Fly Safe have Fun and Happy Hovering.