Trying to take out ZENN motor controller - any advice?

I’m trying to take out the motor controller for my 2009 ZENN so that I can send it to a service provider who will increase the speed to 35 mph. However, I’m looking under the hood and have no clue about how to get started. It looks like I need to remove the entire front bumper, and I’m sure that’s not right.

Any advice? A set of instructions would be great, but my dealer and the service provider say that there are no instructions.