Problems with transferring the data to the phone

It was working the first weeks and then all of a sudden it stopped.. 

I did remove the app and reinstalled it again, shut down the watch and start it, let it shut down because the battery was empty and recharged again..

Read the guide - there are more tips. 

I did.. & checked the settings as well like the guide is proposing. 

(And the white circle is closing while uploading data)

Did you try the tip #4?