At this time, AteMate is only able to sync with Apple Health on iOS and Health Connect on Android.
Many users have shared that they are able to use a third-party app that can sync with Apple Health / Health Connect and then sync with AteMate. One your data is on Apple Health/Health Connect, its data can flow through to AteMate.
If you can sync with Apple Health, follow the steps in this guide to connect AteMate to Apple Health.