These apps usually need the proper fonts in order to display certain characters inside the application. By default, the fonts are installed by the setup package, but if that didn't happen, then I recommend checking the installation folder where you can find the necessary TTF files. Once you find them, go to Start > Run > fonts. Drag and drop the TTF files into the Fonts folder and wait for Windows to install them.
After they're installed, reboot the PC and then restart the software.