For the 60-day Covid extension, must a letter be from your embassy of your passport nation, or the nation of your residence? Or perhaps a no-travel letter isn't necessary anymore? Thank you
TLDR : Answer Summary
When applying for the 60-day Covid extension in Thailand, you should obtain a letter from the embassy of the passport you used to enter the country. If your embassy does not provide such a letter, you can indicate that no embassy letter is available when submitting your application.