Hello, thank you for the information for those who need it. I am applying for OA from a specialized service provider and your list is complete, indeed. Small detail, for the identity photo, in order to avoid the file being refused you must go to a photographer, who you ask him to send you the photo in jpg by email. For those who have decided to stay in Thailand beyond the visa expiry date, you can renew your OA non-immigrant multiple entry visa by ensuring that you have at least 800,000 Baht in an account in Thailand. To open one you will need a certificate of residence, the yellow booklet and/or the foreign resident identity card.