I've installed the application and it appears there is no way to change the program's font size at all. I've access the Program settings, but without any results which means this is a problem caused by the DPI settings in Windows.
Here's how to fix it: go to Start > Settings and type Display in the search box. Afterwards, look in the image below and chance scaling. Reboot the PC and you should see the fonts bigger, based on the value you choose in the display settings.