I created custom resolutions in nvidia control panel. 2560 x 1920, 2732 x 2048 with ratio 4:3. I started the game but I can not set these resolutions in settings. The highest resolution in the game is 1920 x 1440. Is it possible to somehow force the game to use higher resolution than my monitor supports?
If you want set the resolution manually, disable auto resolutions on the DirectVR page of the vorpX ingame menu.
Alternatively you can simply select a quality preset on the DirectVR page of the ingame menu. vorpX then figures out the closest matching resolution that the game allows and is available on your system (including added custom resolutions). This is often the better/safer way.