I'm trying to access my settings on my Mavic Pro, after it was recently fixed at the factory.  I can only see two settings. How do I get access to all settings? I'm not in beginner mode btw. (Been flying for years).

Do you have a complete screenshot of the settings menu and what mobile is it?

The remote is setup as a slave unit, re pair the controller and set it as master

Hello there technomage1618. I am sorry for the trouble this has caused and thank you for reaching out. Can you please try to uninstall and reinstall the DJI Go 4 application on your mobile device and may we also know what is the model of the mobile device you are using please for us to be able to isolate the said issue? Thank you.

DJI Stephen Posted at 8-30 19:47
Hello there technomage1618. I am sorry for the trouble this has caused and thank you for reaching out. Can you please try to uninstall and reinstall the DJI Go 4 application on your mobile device and may we also know what is the model of the mobile device you are using please for us to be able to isolate the said issue? Thank you.

Reinstalling the app didn't work. I followed crash1sttime's advice and it did work.  Thanks for trying.

As for unpairing your controller they were saying this mumbo jumbo about holding C1 + C2 + a couple of other buttons. That didn't work either. The scroll wheel isn't a clickable button, no matter what they say.

crash1sttime mentions master and slave. I couldn't find that in my settings. What I could find was primary and secondary controller inside the "linking remote controller" I believe. (See below)  

I changed my controller to secondary. Then I pushed the little button on the drone to initiate the red blinking and pairing and switched my remote control status back to primary.  They re paired and all the controls are there.  Thanks for your help guys.