Have you talked to your Meraki Rep? You can also try plugging the serials into CCW-R to check on manufacturing date but unless they have the uplifted support it's not going to show anything else. License status is only in the dashboard.
However if these devices are in another dashboard that no one has access to, you may be out of luck. That's going to require legal folks to MAYBE regain access.
Regardless I suggest talking to your Rep.
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