If you are having trouble syncing TextExpander across your devices it could be you don’t have the correct versions. You need the matching generations of TextExpander to match up the syncing. Below is a chart of the versions of TextExpander app icons matched up.
If you do have the latest versions of TextExpander for Mac, TextExpander for Windows and TextExpander for iPhone & iPad, then sign in to your account on TextExpander.com. What you see there is the current state of your snippets. Any differences in the apps are out of sync. To fix this, sign out of the app, then back in. Note, this will erase any edits or snippets you made since that last time the app was in sync. Be sure to move any new snippets which are in the app but not on TextExpander.com to their own group. Then save that group to your desktop before you sign out.
|TextExpander for Mac||TextExpander for iPhone & iPad||Sync Method|
|version 6||version 4||TextExpander.com|
|version 5||version 3.5||iCloud Drive, Dropbox|
|version 4||version 3.2, 2||Dropbox|