Received today

How do you remove the battery cover. One of the handles has come out, minus the bar or screw holding it there. I've turned the key lock as instructed. but still stuck. Hopefully I don't have to disassemble. Other than that assembly was simple for me and my first test ride was good. No damage during shipping. Took two weeks from Electric Vehicle Mall for delivery via Fed-Ex to my door. All for $1024.95.