If you holding a retirement visa it can be valid either for a single entry or multiple entries. This is a long term Thai visa that entitles the holder a stay of uninterrupted 1 year period in Thailand.
"I had watched their YouTube videos and contacted them with a question about visa services. They were a great help in getting my Special Tourist Visa. Most likely I wouldn't have gotten the approvals in time, and I would have had to reschedule my dates, flights, arrival etc. and at great additional expense had I done it myself. I would definitely recommend them for this service."