baht last November when I got my Non O from London but that was for an Annual Multi-trip policy. I used a Thai broker/agent though the policy was with a European company. You could try messaging Arawan Namak.
I’m sure you’ll find her on Facebook. She usually replies quickly.
As they’ve been misused Ed visas will be a red flag to immigration and could lead to questions and hassle whenever you try to enter the country. I don’t know how long you hope to stay for? Remember you can stay for nearly 3 months on Tourist Visa.