Misplaced License Key

[Trils]

Hi, I have misplaced my license key. Is there a way to retrieve it?
Thanks

[Florian]

I've just added a section to the FAQs, which should give your directions:

Frequently Asked Questions

This is a list of frequently asked questions regarding Mp3tag for Mac. If you find something missing, you can reach me via Help → Send Feedback or personal message in the Community. Can I use Mp3tag for Mac under macOS High Sierra or older? Mp3tag for Mac requires macOS 10.14.6 Mojave or later. Every macOS version supported also needs testing and I’ve noticed, that Mp3tag on 10.13 has more issues and non-existent APIs that need extra workarounds. Since it’s an all-new app, I was trying to n…