The most common reason for font display problem is the MICR font was not installed correctly. Usually re-install check writer software on your machine can solve this problem.
Followings are the steps:
1. Log in your machine as administrator.
You must have administrator permission to install the MICR font.
2. Backup your data first.
Although your data should be safe during this process, we always suggest you backup it first.
You can click the top menu "Accounts->Back up current account" to backup your data. If you have more than one account, please backup all of them.
3. Uninstall ezCheckprinting from your machine
You can open control panel, then select "Add or remove programs" to see program list. Then remove ezCheckPrinting from there.
4. Download ezCheckPrinting and install it again.
http://www.halfpricesoft.com/check_printing_software_download.asp