Export ttf Problem

hello
I have FontCreator 15.0.0.3009
I enter a font file in TTF format into the program, I see that this file has 32217 characters. But when I take the output file with the same TTF format and check that file, the number of characters has changed to 31600 characters (some characters are deleted during the output). And this font file, which is for a game, no longer works in that game.
What is the solution?

Remarkable that this could be the cause of the problem, as FontCreator only removes glyphs that are not accessible in a normal manner.

You can disable the “Exclude unused glyphs” option on the Options → Font tab. Then all glyphs are exported. Let us know if this solves the problem.

thanks you