When I play rivals or rush, it only lets me use my keyboard, but not my mouse

[stray hornet]

I'm a beginner, but when I play career mode, it lets me use mouse and keyboard, but when I play rush or rivals, it only lets me use my keyboard. Is there a way to fix it?

[somber otter]

Help, because when I go to play fut champions and other modes in ultimate team it tells me that I have to pay a subscription