One of the best life tips I’ve ever gotten was from some random stranger as I desperately struggled with one of these things: Most times if you slide one edge up and one edge down it pops right open even with super dry skin. Not sure why this works when sliding the halves sideways does not but it dies!
I use razer mmo mouse and the left hand keypad all mapped with input remapper with openrgb for lighting. Super happy with it! Have razer keyboard too but no special mapping just p&p.