[FTC]: Pushbot App Warning: "Can't Map"

[RecycledElectro]

My students are well and truly stuck on their PushBot testing. (We are a rookie team, with all rookie members, and all rookie coaches.)

They have the phones talking to each other, and the motors all work when plugged into a power supply, but only the gripper works under the control of the PushBot manual app.

The app on the phone connected to the game controllers says:
00: Can't map left_drive, right_drive, left_arm
01: Left Drive: 0.0, 0
02: Right Drive: 0.0, 0
03: Left Arm: 0.0
04: Hand Position: 0.33725490196078434
05: GP1: Left: -0.0
06: GP1: Right: -0.0
07: GP2: Left: -0.0
08: GP2 X: false
09: GP2 Y: false
10: GP1 LT: 0.0
11: GP1 RT: 0.0

Can anyone help me point them in the right direction?

Thanks in advance!