I need text to be centered vertically in its text box. I have set vertical justification alignment to "center." But the text is still not vertically centered in the boxes. How do I fix this?

I am not using a table and there is only one column (fixed number) per text box. There are two columns and three rows of text boxes, and it is unclear whether the text inside is trying to align (top / bottom) to the other text boxes. What is clear is that the text is not centered the way I need it to be. Text appears to maintain its position within the text box when the text box is moved.