Have a Russian friend trying to extend (tourist visa or exemption, I'm not sure what Russians get) in Samui, I think they can still only get 7 days, but she's finding conflicting info on if extra documents, medical certificate etc are needed now. Is there a clear answer?
So many people stranded with tough Visa situations now, appreciate this group's knowledge!
TLDR : Answer Summary
Russian Nationals can currently only obtain a 7-day visa extension in Thailand. However, if they have a letter from their consulate stating they are unable to travel due to COVID-19, they can apply for an emergency extension of up to 30 days. Therefore, it's essential for Russians to secure this letter to explore extending their stay beyond the standard 7 days.