Can you get every 6 month visa to Thailand from Canada

Hello everyone, I hope you are well, I need someone to help me and suggest me, the issue is: I have friends from the Dominican Republic who would like to travel to Thailand, here in the Dominican Republic there is no Thai embassy or consulate, how can they get the tourist visa? thanks for answering.

Canadian passport, retired over 50,currently in Thailand. I want to get a long term visa, just checked the Thai embassy website in Ottawa and it looks like they have eliminated everything except for the non immigrant O-A or arriving visa exempt for short stays. The O-A has to be applied for in Canada so I would have to fly back to complete it.

Are there any other options available to me?