A number of people made a common mistake when fitting their Gruppe 'M's which made then sit a little awkward, low or to the side.
Seeing as though Tegiwa copy the Gruppe 'M item I would assume this could be the same.
I've not studied your photo but make sure you've fitted the circular mounting bracket in the correct position with the associated 'L' shape fixing bracket.
The circular plate which holds the actual filter etc is designed so that the hole for the 'L' bracket can be put in various different positions. Like 2, 5, 7 and 11 o'clock, if you've fitted yours at say 2 instead of 5 , it will sit lower in the engine bay when you fix to the car frame with the 'L' bracket.
It's hard to explain but simple when you see it. Study lots of pictures of fitted Gruppe 'M's and it should become clear.
Look at the link to my old EP3 in my sig. Mine was fitted correctly and sat perfectly.