Garage Door Programing Help Needed

Need help getting my new 2021 Prius programming to open my garage door. Followed the instructions in the manual, and when I press the 'house' button, it just slowly blinks orange and never fast blinks or turns green. I am at my wit's end. I have reset the review mirror buttons several times and nothing seems to work. I have a LiftMaster garage door (year/version unknown).
My neighbor tried to help after watching a YouTube video and they got it to work then he went to program the other button for the other side and for some odd reason, all buttons in the car stopped working to open the garage doors. No matter how many times we repeat the steps in the manual, nothing works.

Thank you for your help!