Digital signature does not work

I cannot sign any documents through LibreOffice. Although it finds the certificates without a problem, when I select a certificate to sign the document, nothing happens. This happens with any native LibreOffice document (.odt, .ods etc.). However, digital signature works with PDFs. Below are the details of my version of LibreOffice. Thank you in advance for all your help.

Rosivaldo

Version: 7.2.2.2 (x64) / LibreOffice Community
Build ID: 02b2acce88a210515b4a5bb2e46cbfb63fe97d56
CPU threads: 4; OS: Windows 10.0 Build 19042; UI render: Skia/Raster; VCL: win
Locale: pt-BR (pt_BR); UI: pt-BR
Calc: threaded

Can that help?

About Digital Signatures

Hi @Hrbrgr ,

Sadly not, because LO simply does nothing when I try to sign and ODF document.
Thanks for the reference, anyway.