I had a one-month trial version of Glyphs Mini.
I purchased a license today. But everytime I try to install that license, it pops-up with the message: The test period has expired. Please visit glyphsapp.com to get a license.
I have tried every step form this link: https://glyphsapp.com/tutorials/how-to-install-your-glyphs-license
Re-downloaded & Re-installed Glyphs Mini.
Restarted my Mac (multiple times, even in safe mode).
Deleted file com.schriftgestaltung.GlyphsMini2.plist from ~/Library/Preferences/. Then, restarted Mac & Re-installed Glyphs Mini again.
Also, tried installing it from terminal.