This post provides some methods to fix the error this item is temporarily unavailable on Mac, which pops up after entering Apple ID to reinstall macOS.
Fix “This item is temporarily unavailable” error on Mac
Requested service not available launching Autodesk program
This item is unavailable
This item is unavailable
Fixes to The Error of This Item Is Temporarily Unavailable
Fix: This Item Is Temporarily Unavailable on Mac- The Mac Observer
This item is unavailable , you are an idiot
This item is unavailable
KB1828: WAN Accelerator Fails to Install
SOLVED - Mac OS X Update Error - This item is Temporarily
HOW TO FIX This Item Is Temporarily Unavailable mac book pro imac
summary-bluetooth-wont-turn-on-macbook.jpg
This item is unavailable, anello uncinetto
Fix: This Item Is Temporarily Unavailable on Mac- The Mac Observer