Hello Lee,
the accord préalable of 18 November in the folder you mention is the last one we signed.
Concerning the final deed, the notary gave us a QR code with which we could download same. I just did so and created a folder named Deed in the notary section.
There are finals of the offer in the offre final folder.
The final draft of the compromis (as of 18 Sep) is in the compromis folder, however I’m not sure we ever received a counter-signed version, as we gave the procuration to your father who then sent his signed version to the seller’s notary. Let us know if you need to see signatures in which case we could explore further.