What are the current requirements for obtaining a Covid extension in Chiang Mai?

The inquiry seeks recent updates regarding the process of obtaining a Covid extension in Chiang Mai, particularly noting difficulties in receiving a required letter from the US Embassy. Community feedback suggests contacting local groups for more accurate information, indicating that the embassy has not issued the letter for some time, and the local immigration office is aware of this issue. Key considerations include the number of previous Covid extensions received and the current visa status.