iCloud photo library sync issues on restored mac
Recently my macbook pro was stolen. After receiving the new machine I did a system restore from my Time Capsule. Nearly everything worked flawlessly. However, I have not been able to get Photos to sync my iCloud photo library. I'm properly signed in to iCloud and have all the proper checkboxes checked. I went through the painful process of waiting for Photos to upload x gb of x gb in the preferences pane (which took DAYS). It did finally churn through the data but now it just says "uploading x photos". No photos have been synced since the day the other laptop was taken. Syncing IS working between my iPhone and the Photos app on the iCloud website, but they aren't making their way to the new macbook.
Early 2015 Macbook Pro running 10.11.5
Photos version 1.5 (370.42.0)
Any suggestions would be greatly appreciated.
MacBook Pro with Retina display, OS X El Capitan (10.11.5)