My name is Byron.
Thank you for your question and the opportunity to assist.
Here is a link to the user guide for your projector.
Assuming your remote is functioning you can adjust the picture using the Image Adjust>> Ceiling function in the menus. Please consult page 61 of the manual.
I will always do my best to answer your question. Your satisfaction is my top goal. If you are not satisfied with the answer I provide, for any reason, please allow me to continue to help you (or recommend you for another expert or refund) rather than giving a negative rating. A positive rating is always appreciated.