Hello Chai Wanmanee,
Welcome to the Community page,
so having had a look into this you need to do a clean install rather than just and uninstall and reinstall. You may have to do it manually though as the "clean install" tool that is shown on the tools. If you have a look at this guide it will help you. After you have uninstalled the software you will need to expand the how to do a manual renaming that is under step 5.
If that doesn't work then you will need to speak to an I.T professional or you could install a newer version of the software as if there was an update from Microsoft that changes things that the 2016 version uses, there is no way that a patch will be rolled out for a 5 year old version of the software.
