Help with Premiere Elements 2020 not showing text styles.

Two ideas that MAY work to install and/or run old programs in Windows 10 or Windows 11
-RIGHT click the program icon or EXE and select a compatibility mode in the pop up option window
-and/or select Run as Administrator to assign FULL Windows permissions
-also https://helpx.adobe.com/x-productkb/global/create-local-administrator-account-windows.html

NOTE I have 4 very old IGT Slot games that I installed on Win11 (32bit x86 mode on 64bit OS)
I did not have to select a compatibility mode or run as Admin... Win11 just accepted them
So in my experience Microsoft has done a very good job with backwards compatibility
Program EXE dated 10-07-2015 Game of the Gods
Program EXE dated 03-06-2012 Diamond Galaxy
Program EXE dated 11-18-2011 Lucky Larry
Program EXE dated 08-04-2010 Wolf Run

It likely is something in the update. Try each of these things:

1) Update your GPU driver manually from the nVidia, Intel or AMD site. Windows may not have given you the newest. Reboot.

2) If that doesn't work, go Premiere Elements' Window menu and select Restore Workspace.

3) If that doesn't work, I hesitate to suggest a reinstall of the program, since your version is too old to be installed again. I'd just try the first two suggestions and restart your computer. It may come back again.