Android camera upload not working

I’m on android 7.0 and using Seafile 2.1.6, when I try to use the camera upload functionality I can complete all the steps and when I click on confirm it shows me that the Upload Sevice is stopped. Also when I look under settings and accounts I see that the Seafile syc is off and I can’t turn it on.

What Android phone do you use?

The phone I use is a Nexus 6P.

Any idea how I could fix this or what is the reason?