I don't know how/where BiaB knows the link.
If it was OK but now is not, maybe try:

Options->Return To Factory Settings->...MOST...
or possibly:
Options->Return To Factory Settings->...ALL...


FYI, my files are here:

./Program Files (x86)/VstPlugins/sforzando VST_x86.dll
./Program Files (x86)/Common Files/Digidesign/DAE/Plug-Ins/sforzando RTAS_x86.dpm
./Program Files (x86)/Common Files/VST2/Plogue Art et Technologie, Inc/sforzando VST_x86.dll
./Program Files/VstPlugins/sforzando VST_x64.dll
./Program Files/VstPlugins/sforzando VST_x64.so
./Program Files/Plogue/sforzando
./Program Files/Plogue/sforzando/AAX/sforzando.aaxplugin
./Program Files/Plogue/sforzando/AAX/sforzando.aaxplugin/Contents/x64/sforzando.aaxplugin
./Program Files/Plogue/sforzando/sforzando x64.exe
./Program Files/Plogue/sforzando/VST/sforzando VST_x64.dll
./Program Files/Plogue/sforzando/VST/sforzando VST_x86.so
./Program Files/Plogue/sforzando/VST/sforzando VST_x64.so
./Program Files/Plogue/sforzando/VST/sforzando VST_x86.dll
./Program Files/Plogue/sforzando/RTAS/sforzando RTAS_x86.dpm
./Program Files/Plogue/sforzando/sforzando.exe
./Program Files/Plogue/sforzando/sforzando.bank.xml
./Program Files/Common Files/Avid/Audio/Plug-Ins/sforzando.aaxplugin
./Program Files/Common Files/Avid/Audio/Plug-Ins/sforzando.aaxplugin/Contents/x64/sforzando.aaxplugin

And I appear to have installer an here:

./bb/Data/Installers/sforzando_v1.933.exe


Jazz relative beginner, starting at a much older age than was helpful.
Kawai MP6, Korg M50, Ui24R, Saffire Pro 40.
AVL:MXE Linux; Windows 11; Win8.1: Scarletts
BIAB2022 UltraPAK, Reaper, a bunch of stuff.