Hello,
Something that I noticed;
Looks like it supports Windows XP, and Vista.
From:
http://www.efficientnotes.com/
Latest Version: 5.60 Build 547
System Requirements: Windows 10/8/7/XP/Vista
From your page:
Technical Details
Developed by Efficient Software
Version is v5.60 Build 547
Download size is 16.1 MB
Supports Windows 7, 8/8.1, and 10 (32-bit and 64-bit)