Mobile Joysticks Replication Broken After Building Unreal Engine From Source

I am building a mobile multiplayer game for iOS. In order to get multiplayer working with the plugin I bought, I had to build unreal engine from source. Since doing so, even with completely blank new projects, my mobile joysticks haven’t been working correctly:

When I play test multiplayer as two clients, only one of my clients moves from joystick input. EVEN IF I’M USING ANOTHER CLIENT’S JOYSTICK! So if I use client one’s joysticks, it moves client one. But if I use client two’s joysticks, which are on client two’s screen, it still only moves client one! How can I be controlling player one from player two’s screen!?

I have tested this on different projects, same issue. I had my coworker, who doesn’t have unreal engine built from source, do it, and his was working fine, each client controlled their own self. I know enough about making new joysticks in the editor to know that there isn’t anywhere I can change the owning player settings or replication for them, so I am at a complete loss as to where I can even TRY to fix this. I’ve been sifting through the source files, but can’t locate at all where the code is for mobile joystick creation, let alone what might have changed to cause this problem.

Thanks so much ahead of time if you have any ability to help.