fa icon does not appear in Button

[jan-2017]

Hello.
I'm using phpbb 3.2.0 with only one style (prosilver) and after install no fa icon appears in the button.

By the way all letters like ä,ö,ü will show in other Symbols.Only in language german.

Bye Jan

[Zukero]

Are you using the 1.0.4 release from phpbb.com or did you fetch the sources from here?