To solve the problem, please follows the steps as following;

To check the security setting of MS Word first: [tool]--> [Marco]--> [Security]
In the pop-up window, you will find the level of macro security setting, e.g. Very High, High, Medium, or Low. You might try these two solutions;

1. To change your security setting from high to medium or low. After that, you will find the Annotate All is detected as an unsafe program when you launch MS Word every time. You can just skip the warning message because Annotate All is a pretty stable and safe program.

2. If you still want to keep the security setting as high level, the second solution is as following:

(1) Download the update version of the software at (AnnotateForWord.zip)。

(2) Unzip the file and click Setup.exe to install it into your computer