M55 RGB Pro mapped Space to right back button, doesnt register in game or desktop

so I have tried mapping SPACE to right back(side) button. I have used Remap Keystroke to SPACE. Doesnt work in game at all. Game is mapped correctly(Rust is the game for reference, but that shouldnt matter). I have also used the Remap NUM & Symbol keys function to SPACE. That is the only other option where SPACE is actually in the selection menu. Neither function inside the game. I have even tested on windows desktop in a simple text file to see if SPACE responds. It doesnt. Those are the only 2 places to setup SPACE in the software. So im at a loss and feeling like money wasted at this point.

I think I have resolved this thus far. I right clicked icue.exe to run as admin. So far so good, space is responding well. Dont know if it will work for others, but it did here. Cheers.