Did you try the blueprint.zip I included above?
I had the actual BP I setup with the door and the event graph. It looks like you’re using Level Blueprint rather than just putting your door in a BP by itself. You shouldn’t need crazy values for the Roll and Pitch which looks like you’re offsetting for it’s location possibly?
Try using the BP linked above from the previous post and see if this helps.
If I remember correctly when I set up the Timeline it was just a 0 to 1 value that was 3 seconds long with a cubic break so that it would smoothly open from beginning to end. This was only controlling how the rotation would move not where it would move.
Also, it looks like you’re using relative LOCATION rather than ROTATION. The problem you may be seeing because of this is that with Location you are feeding in a vector that corresponds to a location in 3D space. With the setup above the RInterp is converting a rotation into vector.
Give the above a look and let me know if this helps. 
Tim