In order to maintain eye contact with your audience while reading from the teleprompter, if you are recording horizontally - you should position yourself close to the camera. If you are recording vertically - you should position yourself in the middle of the screen. You should be able to read your text from where you stand.
The text should also appear in this position so that your eyes don't travel while you read. Keep your eyes always on the first line so you’re looking directly at your audience.