Ask the installer to compare the captured loss with the physical confirmation arrangement on the identified tray. Does the trace show the condition never arriving, or arriving and then dropping?
Has the installer inspected the seating and confirmation target, or only reviewed the exported states? The distinction would help you ask for the next actual task.
And compare it with a correctly identified normal tray on the intended contacts. Retaining the suspect one is useful, but the installer needs to know which differences are intended before calling one a defect.
Comparison found a cracked support strip on the captured tray. Tooling says the loose end can obstruct seating. Tray withdrawn; replacement being checked.
Did the identified replacement complete the agreed seating and transfer checks? That would move the account beyond a plausible cause for the captured loss.