You can miss the extra +50% gametime when subscribing.
Be aware that resuming your subscription cycle isn't nessesarily going to give you the additional 50% gametime as it rightfully should. You can easily end up just getting another 12 months because resuming a subscription cycle isn't considered using the special offer that is 12 month +50% gametime.
I sincerely hope that Live Chat is willing to retify the issue for the unlucky people that ends up not getting the extra 50% they rightfully should get when subscriping today, because there are two ways to subscripe for the same amount of time.
So check if you got the extra 50% gametime and use the Live Chat option from your account page if you didn't.