apple care plus

Please dismiss the name no idea why my name is an apple watch issue...but my question is- has anyone been having trouble buying apple care or apple care plus? As of right now I only have 40 days left before my time to buy apple care plus is gone. I tried to buy it but it doesn't allow me too. I tried to do it using my computer to get the service there but all I get is a "System Currently Unavailable We’re updating our system. Please try again later." I tried pressing the option on my phone but i get the same msg. I got an email a while back about apple care plus and even that doesn't work. Is this a glitch or is the phone itself messed up? I doubt the phone is messed up but I want to get coverage before something happens then I am screwed. If anyone knows how to fix this please tell me. Thanks.