The quad won't change to any other mode other than stabilize and Alt Hold.
I have my flight mode set up like this
Mode 1 - Land
Mode 2 - Stabilize
Mode 3 - Stabilize
Mode 4 - Loiter
Mode 5 - Alt Hold
Mode 6 - Stabilize
When I turn my quad on it will be on mode 6, then I can change it to mode 5 Alt Hold, but after that, it will change back to stabilize mode if I choose anything else. I try to switch the mode while my quad is connected to the Mission Planner and the PWM seems to be correct, however, the Current Mode display, display a different mode than what I selected if I select any thing other than stabilize or alt hold.
The picture shows that the current mode and the selected flight mode does not match. The mode configuration here is different because I tried to switch to other modes to see if the problem is only with a specific modes.