24 months ago
How can I fix this?
Tilt it up?
You need a much better picture depicting this "leaning".
It's kind of hard to determine what's going on from the photo but if it's the Acer monitor from your completed build, the specs indicate that it tilts from -5 degrees (where it appears to be now) to 15 degrees so it should be able to be tilted back.
I can't speak for this particular monitor but often to tilt them back you need to simultaneously lift at the bottom and push back slightly at the top.