When I was writing a thesis today, I wanted to add a number to the formula. I found that many options of MathType in Word were grayed out. Then I searched for some information and finally solved it. I will record it here for future reference.
The options on the right side of the MathType formula editor are grayed out
Problem Description
Click "About MathType", you can see that the display is about 30 days expired, and it has changed to Lite Mode, the streamlined mode.
In this situation, MathType shows that the certificate is invalid after being connected to the Internet, and needs to be re-authenticated or purchased. Or MathType became a condensed version, only two lines left.
solution
The solution is divided into two steps: 1. First prohibit MathType from networking, 2. Then delete the redundant information in the registry
Disable MathType from networking
Delete redundant information in the registry
Effect
References
MathType equation editor expired, Lite Mode, Lite Mode (failure, network cannot be used) solution