problem ipad backing up into icloud/itunes
I always updated and keep backing up my ipad (retina 4th gen 64 GB) into iTunes or icloud. But lately I couldn't back up into icloud nor iTunes. It would show on computer showing date of backup I clicked to sync backup but it keeps stopped no error message or can't backup into iTunes? reason?
iPad (4th gen) Wi-Fi, iOS 8.4.1