That sucks but at least it came off in one piece. I would clean both surfaces with an alcohol soaked paper towel and bond it back together with 3M 77 and you wouldn't have to worry about it again. Clamp it to a flat surface for a day after bonding to help it glue down flat.
That is bad as they didn't do any surface prep to the aluminum to increase adhesion.
That is bad as they didn't do any surface prep to the aluminum to increase adhesion.