We got the same notice and applied back on 8/9. Here is the email message we received this morning:
Dear Sir or Madam,
We are sorry to inform you that we are currently receiving a very large number of requests and will not be able to process them all.
We remind you that a negative result of an antigen test taken at a pharmacy, available all over France, grants the user a health pass that is valid for three days (72 hours).
We inform you that a new application is available online for foreign citizens except students : https://www.demarches-simplifiees.fr/commencer/passe-sanitaire-etrangers
and following this link for students : https://www.demarches-simplifiees.fr/commencer/passe-sanitaire-etudiants
We actually no longer need the passe sanitaire as we returned from Paris 1.5 weeks ago! I mentioned this in other posts but we were able to use our CDC cards at all the major museums & restaurants in Paris as well as Versailles with no issues. On the rare occasion (in a couple of restaurants) where the host or waiter/waitress was not familiar with the CDC card, there was always someone else on hand that knew what it was and accepted them. I'm not sure if the same holds true outside of Paris but in Paris the CDC card worked well.