There maybe problems whit your cloud saving date for this do this steps
1.make sore you have updated version of origin
2.re-install origin
3.make sore your cloud save is set to take saves from bf4
4.delete your browse history
5.change your browse try a different one
if non helps you may have connection problems whit origin or your xbox that may chose this problem for this you must contact Origin/EA support they will gladly help you whit this problem https://help.ea.com/en/origin go here press contact as give information press i still need help at the bottom of the page and then press start live chat and you will get a live chat whit an EA agent that will be glad to help you
if this helps pleas give XP to my account thanks
mark it as solution if it solves your problem so others can know the answer when they come here