I use MXTool box too to check mine too. All of mine which have been…I don’t somewhere between twenty and fifty Mail-In-A-Box servers over the years have all updated within a few hours after I received the confirmation email.
If it’s been a week I’d send the form again. Verify the correct static ip address is in the form. And let them know in the comments that it’s been a week and reverse DNS has not been updated. Then open a support ticket,
I’ve never had a problem with that before. I’ve had some trouble when registering domains when it first came out. And another reason I like Amazon. I can actually talk or chat with a real person.
I’m sure you’re on the free support plan like myself. You can still contact support. Just use “general” as the category. If you call just let them know it’s part of the “free service” they never give me a problem at all. They will mark the ticket that you created before calling and send it over to…I guess Route53 department to take a look into it.
Have a great rest of your weekend!