Only email I have is info@stmaartendive.com. Might want to email Aqua Mania also as they do the bookings for them. Been a little crazy there since Irma but I know they are in operation and doing dives.
http://www.stmaartencharters.com/ We always use this charter ... Ian Martin has a NEW CAT as his other was destroyed in the Hurricane.. can't wait to go on it.