Can't turn off iCloud-photo
My iCloud photo sync is not working so I would like to turn it off and on again. But I can't turn it off.
When I try from system preferences - iCloud - photo. Then it tell's me to open iPhoto and turn it off in there. But in iPhoto - preferences - iCloud there is only this massage:
Do anyone know what to do?
(MAC OS 11.5.1 on a iMAC M1)
iMac 27″, macOS 10.13