Hi, I purchased an AIMA Santa Monica Ebike a few weeks ago. Tested it at the store, and brought it home.... Due to weather and life etc, have not tried to ride it until now. I know how to add the fully charged battery, turn it on, ride it /pedal and then push the Assist Arrows, but there seems to be no Assist and the assist #'s on the computer do not change. Everything else seems to work. I am attaching a picture - The bike has Shimano gears and the computer says Bafang on it. I tried to call the store for support and the phone just rings... All the youtube videos I watch just seem to be Generic jabbering, I look at the instruction manual and the pictures are poor. In the picture I am attaching, please note the arrows I am pushing which don't seem to do anyhting and below those is a plastic square with lines on it that pushes down but does not seem to do anything. Hopefully, I am just missing something simple. Any suggestions ? Thank you!