Problem with Fibo Voice Search Icon

Hello,
I have a problem with voice search. I do everything described in your Voice search article with the code in wp-config.php file, after that snippet for language setup, the voice icon is visible in the search field, but when I click on the microphone icon, no popup (to enable/disable microphone) opens, only a crossed out icon remains visible. In all Windows settings, and in the Chrome browser – the microphone is enabled, pop-ups are also enabled.
Please guide me on possible causes of what could be the problem.

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