the days, Thailand Pass was sent in an instant after application (if proper documents and QR codes were loaded) are over...

Now from each application, accommodation reservations are sent to the hotel for confirmation. If the hotel does not confirm within 30 hours, application is rejected!
There are already reports of several people. whose application was rejected as hotels did not react...
needless to say that this will make the application process longer and even more difficult in general

confirmation mails also seem to be inconsistent; some got one immediately after application was submitted, some after the hotel confirmed reservation and some did not get any confirmation mail at all...

Hotels tasked with checking bookings (bangkokpost.com)