"Some account services require you to sign in again" on non-Hack devices?

New to /r/hackintosh -- got fed up with Windows's bullshit so I installed High Sierra on my desktop (i7-4770K / GA-Z97X-UD5H / GTX 780.)

Everything went well and the machine required minimal effort to get everything working, which was nice, but now my iPhone, iPad, and MacBook Pro are all telling me to sign into iCloud again or "some services will not be available."

Is this any cause to be concerned with my Apple ID? I signed into the App Store to download Airmail and PCalc on the Hackintosh.