Please be informed that installing our software has not affected your computer's fonts.
This issue is caused by one of the Windows updates you have installed recently. We would suggest you to browse to "Installed Windows Updates", find "KB3013455" and uninstall it. Also, uncheck it and hide it so that Windows would not reinstall it.
Steps: Start → Control Panel → Programs and Features → View Installed Updates. Search for KB3013455, double click on it or right click and select "Uninstall" and proceed with the onscreen instructions to uninstall the update.