Forerunner 235 How combine Chinese account and Italian one

I have a forerunner 235 bought in China, until 2 days ago I can connect in Italy through Garmin Express.

Now it goes directly to the italian garmin webiste, and all my historical data seems lost, How I can do to come back or link the 2 account?

All my activities seem lost from italian website, or at least without the right description, no more equipments...