There was a problem installing Grammarly’s word plug-in, prompting that the plug-in could not be loaded. The solution is as follows

1. Uninstall Grammarly

2. Run the installer

3. When the welcome to grammar box pops up, press shift and control, and click get started. In the next step, you can see install for all users and check it.

Then follow the steps to install

Re open word and log in to the Grammarly account!