Hello there!
I know some players have the same issue as me, without being able to remap the movement keys and struggling to play with WSAD. However, after talking with Mark Turner on the Facebook Group Predator: Hunting Grounds Community, he suggested me to use a keybind remapper, which allow us to assign any key as WSAD, so we can play with the arrows, for exemple. He also sent me a link to download a key remapper, which works perfectly, so here it is for you guys which struggle like me. It makes so much better to play, and is the best option while Illfonic doesn’t fix this.
Here it is: KeyTweak
The only downside for me is that I have to restart the PC everytime I remap the keys and to turn those settings off as well, and sometimes I get tired of doing that because my computer is a little slow.
Anyway, here it is and I hope this helps you all as it have helped me! And once more, thanks Mark Turner from the Facebook group for the help!