Hi Joy,
Unfortunately the “auto lighting” is placed in the design and cannot be altered wherever they land. However I am able to notice that in your design your auto lighting isn’t very bright, as it appears on the back wall in your image. Is it possible that the light in the corner is from another light source? If it isn’t from another light source then try to create a copy/paste of the design to see if that corrects the issue.
If this doesn’t work then I would suggest to contact out support department at 1.866.697.2020 to help take a look.
Kris