Apologies for the long delay, We missed this forum.
AxCrypt is a user-mode software, we can install/uninstall the AxCrypt app like the other applications/softwares.
We are not sure about the other uninstaller softwares, but AxCrypt works fine when we uninstall the app using the default windows uninstall technology. If we use the default, AxCrypt app-related contents(except manually created shortcuts) will also get removed from the system.
So this is not because of the AxCrypt app, this might be because of the third party uninstall software. Please check with their support or use windows uninstall.