Hi again Beth -
There were Font management changes made in April Version 1803 Update so make sure you have that first at Settings > System > About.
If not install the Media Creation Tool from this link choosing Download Tool Now, install the tool, open it and choose Upgrade this PC Now. http://windows.microsoft.com/en-us/windows-10/m.... This will save your files and apps while bringing you up to the latest version by the most stable method. It will also bring all of your Updates current and solve most problems since it reinstalls Windows.
Once in Version 1803 see here how to install Fonts: https://www.techrepublic.com/article/how-to-man...