iClould account does not work in High Sierra
Cannot sign into my iClould on High Sierra. The only app that works is iTunes. No photo, email, notes, or any other related apps have me signed in. After inputing my account and password, the setup windows goes back to "Enter your account" stage.
Have reset the PRAM, SMC, deleted the lists from "Accounts" folder, etc. Nothing works. Any help would be highly appreciated.
Mac Pro (Mid2010), High Sierra, 10.13.6
Mac Pro