How to get ADVERTISMENT_KEY for linux machine?

[jbrepogmailcom]

Describe the bug
Instruction are not clear what "app" to run to get ADVERTISMENT_KEY on linux machine: "You can copy the required ADVERTISMENT_KEY from the app by right-clicking on your accessory and selecting Copy advertisement key (Base64)". What app do I need to run?

To Reproduce
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4. See error

Expected behavior
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OpenHaystack version:
[e.g. 0.3.4] (copy from OpenHaystack → About OpenHaystack)

macOS version:
[e.g. 11.3]

Additional context
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