I set my customizable button to takeoff/land, and it works great until I reboot the go 4 app. Then it forgets what I saved.

Connect you mobile phone / RC with wifi

Just to save it, or do I always have to run it that way for it to work?

If you are using a OTG cable it won't save your settings.

WickedWingman Posted at 2017-9-15 17:38
Just to save it, or do I always have to run it that way for it to work?

Please try to use wifi and set your customizable button again. Keep us updated if it doesn't work.Thanks.