Hi everyone.. my friends from the US came to Thailand with a 30-day visa exception, now that their visa is going to expire next week so they want to do Covid-visa extension. In the requirements, an embassy letter (some says it’s called ‘Residence Certification’) from home country’s embassy in Thailand is required so I’d like to ask what kind of documents they should bring to the US embassy in Thailand in order to get the letter. Thank you very much in advance. 🙏🏼