Thunderbird doesn't open .docx attachment in Libre Office

I already started this topic previously and although an initial issue was sorted, I still can’t open a .docx attachment in Libre Office, by either clicking on the attachment or by right clicking > Open.
I use a Mcbook Air and saved the attachment > Get info and confirm that I request all such documents to be opened with LO 24.2.1.2 (present version for my Mac).
I can also confirm that in Settings > General, under Files & Attachments, both MS Word and Excel are set to: ‘Use LO v. 24.2.1.2 (default)’, which is correct. But it doesn’t.
Many thanks to all.