So the same source is official info in your post, but not in mine? It might have occurred to you there may be contradictory info published on the same official sources, or bits were amended over time without older articles being updated?
Attached a screenshot of the article that i referred to (title: “General information - Phuket Sandbox Updated”), last updated on 26-Aug.
The article that you quoted from may be more detailed, or older, or newer … who knows? Obviously not you, because when i asked you did not know a date nor provide a link and only asked me to tell you (555). Do you think this is a competition here? Get a life mate.
As mentioned already i do not know what is actual fact at the moment as i did not investigate this point further, hence recommended to check locally (and at the time) if such activities are of interest to anyone.