I tried to register at 'customer service' at Samitivej hospital on Thursday. They had no idea what I wanted. In the end they said that I should "use the app to register on the 7th of June".
They had no idea of "The Deputy Spokesperson for the Ministry of Foreign Affairs has confirmed that plans have been scrapped for any mobile app or online registration for foreigners, as the data on foreigners living in Thailand is scattered between many agencies. No centralized database exists to use for a mobile app to verify people for a vaccine appointment."

https://thethaiger.com/coronavirus/d...up-for-vaccine

OR have there been more u-turns?