Android help

[Tattooed-nerd]

So I am pretty new to the emulator game and need some help. I have the newest version dolphin installed on my S7. I was able to fix the touchscreen layout from putting all the Gamecube controls in the top left corner but none of the buttons are responsive. Before when they were stacked in the corner the top button was the d-pad and I was able to scroll through the menu but now that I have them not all smashed in the corner they don't do anything. I've tried installing older versions but if I go too far back and attempt to install it my phone says the package is corrupt. Any help would be greatly appreciated, thank you in advance!