Somebody pls explain – Cube Escape: Paradox Review

I would give it a 5 star but let me explain . I’m on chapter one and I got up to the part where I had to rearrange my memories inside my head using the squares. I could not figure out how to drain the water after knocking down the wine glass. I pull the lever to open the little trash can but it keeps on closing back because there is some blinking red thing on top of it. I checked 2 different walkthroughs and both did not have no blinking red thing on the trash can so they were able to drain the water right away by pulling the lever. What I dont get is for some reason. When I reach the same spot . Why do I have something on top of the trash can keeping me from being able to pull the lever and drain the water right away. Somebody please explain did I miss something?
Review by Thuggy1216 on Cube Escape: Paradox.