Il 2 sturmovik ultimate edition problems

[Pedminacar]

Hi everybody

Recently I bought Il 2 sturmovik ultimate edition, and received it today. After instalation I lauched the game and changed several settings to improve video. The problem is that after I exit the game, the settings change to default automatically. For example, I changed from openGL to directx because with openGL the game crashes, but after i exit the game, the setting is automatically changed to openGL. How can I resolve the problem?