Logitech keyboard problems

I have a problem with my logitech K3 80 on my iPhone don't get me wrong it's a great keyboard, but I have a couple issues I am a user of Chrome remote desktop and a lot more remote desktop software, it's a lot of an issue because log tech has created a OS specific layout for iPhone, but whenever you switch to a Windows laptop or whenever you use remote desktop that layout is still in place this is a problem because it makes issues whenever doing all the plus F4 alt plus tab anything that requires the function keys because F4 and all the function key are balanced different things on the iPhone in my case, I can't do things like press out plus F4 while on a desktop which means I have to use task manager one of the games I play it requires me to use effort to get to a certain menu, it just makes a lot of problems. I've been on the phone with logitech to try to fix this, but all they say they can't do anything it just irritates me, because I spent money on this keyboard, for that just for that to happen does anyone have any idea what I could do? sorry for the spelling errors.