I use Dynalist on my iPhone, Windows and web.
I notice that web and Windows notes are always in sync, but not iOS.
If I create a note in iOS first, whatever I typed gets synced with web and Windows. If I then, add more lines to same note either on web or Windows, the additional text does not sync with iOS app. However, the web and Windows still remains synced.
The status shows synced in all apps. And refreshing or logging out and back in does not resolve the issue.