Hmm, I've taken a look and according to this support article on their website, they're using libspotify, which is a library that has been depreciated. It's currentely not possible to generate these keys. For more help, I recommend getting in touch with the developer of the app. They should be able to take a closer look here. Let me know if you have any other questions.
Have a good one,
HuboRock Star 16
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