Hey there @plioh! Please do the following: Start the game and pick your character. Once you are in game, open the Settings menu. Choose Camera Options. The option to revert the inverted axis is found in there.

Please let us know if that solved the issue.

Maybe this will help: I had to change the App Settings.. now they are like this:

SET MouseRawInput “1?
SET MouseSensitivityFirstPerson “0.50000000?
SET MouseSensitivityThirdPerson “1.28999996?
SET MouseSmoothing “0?
SET InvertMouseWheel “1?
SET InvertMouseY “1?
SET InvertMouseX “1?
SET CachedRLREnabled “1?
SET CachedReflectionResolution “4?
SET CachedShadowFiltering “5?
SET ScreenshotFormat “BMP”
SET PregameGammaCheckEnabled “0?
SET HardwareCheckEnabled.2 “0?
SET SUB_SAMPLING “2?
SET REFLECTION_QUALITY_v3 “2?
SET PARTICLE_DENSITY “3?
SET HIGH_RESOLUTION_SHADOWS “1?
SET SHADOWS “4?
SET GAMMA_ADJUSTMENT “112?
SET VIEW_DISTANCE “1.69000006?
SET GPUSmoothingFrames “10?
SET MIP_LOAD_SKIP_LEVELS “0?
SET RAIN_WETNESS “1?
SET LENS_FLARE “1?
SET GOD_RAYS_v2 “1?
SET ANTI_ALIASING_v2 “1?
SET AMBIENT_OCCLUSION “1?
SET COLOR_GRADING_v1 “0?
SET BLOOM “1?
SET DEPTH_OF_FIELD “1?
SET COLOR_CORRECTION “1?
SET SOFT_ALPHA “1?
SET DISTORTION “1?
SET CHARACTER_LIGHTING “1?
SET DIFFUSE_2_MAPS “1?
SET DETAIL_MAPS “1?
SET NORMAL_MAPS “1?
SET SPECULAR_MAPS “1?
SET CLUTTER_2D “1?
SET SIMPLE_SHADERS “0?
SET WATER_FOAM “1?
SET VSYNC “0?
SET MAX_ANISOTROPY “3?
SET FULLSCREEN_v5 “2?
SET PreferMaximizedWindow “0?
SET FullscreenHeight “0?
SET FullscreenWidth “0?
SET WindowedHeight “768?
SET WindowedWidth “1024?
SET SOUND_ENABLED “1?
SET FOOTSTEPS_VOLUME “50.00000000?
SET FOOTSTEPS_ENABLED “1?
SET SPEAKER_SETUP “1?
SET BACKGROUND_AUDIO “0?
SET VO_VOLUME “70.00000000?
SET VO_ENABLED “1?
SET UI_VOLUME “70.00000000?
SET UI_ENABLED “1?
SET AMBIENT_VOLUME “70.00000000?
SET AMBIENT_ENABLED “1?
SET SFX_VOLUME “70.00000000?
SET SFX_ENABLED “1?
SET MUSIC_VOLUME “70.00000000?
SET MUSIC_ENABLED “1?
SET AUDIO_VOLUME “59.00000000?
SET AUDIO_ENABLED “1?
SET TooltipFilter “2?
SET TooltipNumOptions “2?
SET EffectsLookupViaBinarySearch “1?
SET Language.2 “en”
SET GraphicsDriver.7 “D3D11?
SET PatchDataPath “game:/GameData/”
SET CacheDataPath “machine:/Cache/”
SET GameCameraFirstPerson “0?
SET AcceptedEULAVersion “2?
SET DirectionalDamageIndictorVisibleInThirdPerson “0?
SET CameraFramingTransitionEnabled “1?
SET SkipPregameVideos “0?
SET HasPlayedPregameVideo “1?
SET RangedKillCamera “0?
SET PlayerKillCamera “1?
SET LastMonsterKillCamera “1?
SET MinFrameTime.2 “0.01000000?
SET ParticlesEnabled “1?
SET RequestedNumThreads “0?
SET FreeUnusedGrannyFileSections.2 “0?
SET IsTrustedMachine “1?
SET RememberAccountName “1?
SET AccountName “”
SET LastRealm “NA Megaserver”
SET CustomUIScale “1.00000000?
SET UseCustomUIScale.2 “0?
SET RollDodgeDoubleTapEnabled “1?
SET RollDodgeDoubleTapTimeWindow.2 “185?
SET CameraZoomDistancesSynced “1?
SET SiegeCameraZoomDistance “6.00000000?
SET WeaponsOutCameraZoomDistance “2.00000000?
SET WeaponsSheathedCameraZoomDistance “2.00000000?
SET MaxNetworkWriteBuffer “10485760?
SET MaxNetworkReadBuffer “10485760?