Hi, I'm trying to upload my photos on iCloud and up to a point it's going well but then it stops and stays stuck for days. The only way to get it unstuck is to click the checkmark next to iCloud Photo Library and say Turn Off and then re-enable it again. But it starts from the beginning it's time. So if I'm stuck on 4000 it will say "Uploading 9000" which is the whole library again. Does anyone know if it will skip the photos already up or will it upload duplicate photos? Thanks.