MAC & iOS HINTS
For the most common things you may be wondering.
CLOUDKIT
Don't worry, all of your charms live in your macos app, this means, you wont' loose anything. Sometimes and specially at first launch, cloudkit take time to sync all data, try relaunching the app to speed up the process. Eventually all your charms will be synced.
All of the sync engine relies in Cloudkit framework and this is managed exclusive by Apple, delay can happen but no worries, eventually all be in sync.
LIBRARY
When you install in iOS the first time without iCloud enabled, all of your charms and favorites are in your local container, if you later enabled icloud, then all data will be synced from your macOS app. Be sure to enable iCloud in your macOS app.
Windows & Android HINTS
For the most common things you may be wondering.