Another thought
Bill's mention of "injecting" implies to me that the real question is how to get glue into the bubbles in the aluminum, without pulling up all of the aluminum and starting the floor from scratch. The goal is to get some glue onto a wide area under the aluminum.
I'm thinking that a water-thin spray, with an extension tube on the valve, would do the job. Or a water-thin liquid glue could be injected into holes in the aluminum. The watery stuff would flow out between the aluminum and the foam, especially as weight is added. The glue doesn't need to have steely strength, but can be more moderate. This may widen the list of choices.
Just my thoughts
Bill
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