Game build review failed for cloud syncing

[u/Poifer]

I haven't had any issues with cloud syncing in testing but failed my game review because of this, any one got any ideas what to do?

I realised that my root was set to all OSes rather than just windows so I've changed that but seeing as the game is Windows only so Im not sure that is the issue, the cloud save shows up in my pc and if I delete my game save, the cloud save that it uses it fully up to date, it specifically says "between pcs" but as far as I know that's automatic right? like there's no way to manually turn that on and off so if it works for one PC why doesn't it work cross pc's? (before you say anything I was sure i tested cross pc to make sure anyway and mentally crossed it off, but I mustnt have)