How are you trying to "attach" the plug-ins? In my experience, Topaz is notoriously bad at installing plug-ins and seems to have an inconsistent pattern for where the plug-ins are placed.
However, I was just able to install my older version of Sharpen AI (ver. 3.3.6) into Elements 2023 without issue. After the installation, I did a search for the plug-in file and it has been installed in the locations shown in the below screenshot for my various versions of Elements.
Hope this helps you out. Otherwise, you may want to seek help from Topaz support.