Xbox Series X controller not working on Classicboy, PPSSPP emulators

[Scott105]

Hi.
I'm having some problems with my new Xbox Series X controller and emulators on my phone. The controller is brand new, pairs perfectly with my phone and works like a dream on Minecraft PE.
However, when I try to play a game on Classicboy, let's say, PS1, the sticks and the D-pad won't work. The X, Y, A, B, shoulder buttons, triggers and start and select buttons work.

Does anyone have any advice?