Motion Matching Root Motion / RootBone Orientaton problem

Hello everyone. I´m currently banging my head against the Motion Matching feature in UE 5.7. I have bought an asset-pack with several creatures, which i now want to make controllable. I thought i could use Motion Matching for this to make things easier, but i can´t get the forward and backward animations to work. In the screenshot i provided you can see, that the forward and backward trajectories are pointing to the side and are very short. The strafe anims show a long trajectory and they work fine when i play the character. All the anims have root motion and also root motion and force root lock is ticked as you can see in the second screenshot. What i think could be the problem is the wrong orientation of the root bone, as it´s y axis is pointing down and z points forward. I think y should be forward and z up, like in the mannequin example, but how do i fix this? I tried to edit skeleton in Unreal and re-orient the root bone (screenshot 2), which lead to rotated animations. I then tried to fix the animations root bone rotation via ReOrientRootBoneModifier, which also does not quite work.

Please note that the settings in the screenshots are not the ones i tried, i´ve reverted all of them because everything got messed up and the anims look good again in the editor and i can start over again.

I really hope anyone has some genious tips to make this work, have a great day everyone! <3

Screenshot 1

Screenshot 2