Title says it all... my waterproof plastic holder for my GoPRO will not shut, period. When it did shut last time, it left a painful indentation in my thumb. This time, I just can't do it. I'm no bodybuilder, but I do work out and am reasonably strong... and not being able to close a camera case is unacceptable.
Have any of you had this problem? If so, how do you get the black lever shut?