For security reasons, after registering we cant let the user actually use the product until 14 days have past.
Right now I'm just appending a message at the end of the form (Ann#3) - is there a better way to do it?
I think that clear messaging to the effect of:
"We will email you when your service is ready. For security purposes this may take up to 14 days."
This helps me realize that I don't necessarily need to remember the '14 days' measure of time and can rely on my email - but you've also communicated an approximate wait.
The only thing I would suggest is using a eye catching color on this notification's title so that a user doesn't skip right over it. I would also move it a bit more to the left so that users don't "skirt" around it.