What does this icon mean in Fontcreator and how to fix the error?

Question

Windows

sometimes instead of a symbol he writes this, what is my cant and how to fix it? thanks in advance

Answer 1

This is an antifraud for the trial version of the program so that it is not possible to create fonts for free in it. In the purchased program, this is not.
(The answer was found on the official forums of the program)
https://forum.high-logic.com/viewtopic.php?f=3&t=9189