The text render compinent features two alignment properties which can be set in the details panel: Horizontal and Vertical.
While the horizontal alignment is accessible to BPs, no vertical adjustment node is available?
Could you please add the vertical adjustment node for this component?
I have gone ahead and entered the feature request for the suggested implementation (UE-15896). We appreciate you taking the time to enter the request and let us know if you have further questions or need additional assistance!