If a user crashes, the file may remain checked out. You may need to use the "Cancel Checkout" feature (usually requires administrator rights on the assignment file) to free it.
Use Adobe Fonts (formerly Typekit) to sync fonts, or ensure local fonts are installed. To make this guide more specific to your needs, Troubleshooting for "checked out" or missing font errors? A guide on using Track Changes effectively? Adobe InCopy 2020 v15.1.2
Shows exact text placement, fonts, and styling within the InDesign layout. 2. Getting Started (Setup) If a user crashes, the file may remain checked out
Never move or rename .icml or .icma files in the operating system (Finder/Explorer). Only move them via InDesign/InCopy to avoid breaking links. If a user crashes