Cant save back buttons assignment?

[alex_markov]

When I assign back buttons to AE lock each flight they claim they are unassigned and I need to assign them again??? The same is with MF each start it goes to AF

 

[quinn karter]

Same problem. Let us know when you drone suddenly loses power, if at all. Check the pins between the aircraft and battery for burn marks.

 

[Third Eye View]

Assign the button and ensure that you PRESS the button for at least 2 SECONDS. It will not work with a simple press......................

 

[alex_markov]

Assign the button and ensure that you PRESS the button for at least 2 SECONDS. It will not work with a simple press......................

I did it several times and always next flight buttons are Unassigned again